Deuteron Groups Research Articles

22Na(3He,d)23Mg reaction studies of states near the proton threshold and hydrogen burning of 22Na

Abstract The 22 Na( 3 He,d) 23 Mg reaction has been investigated at E τ = 30 MeV using a 22 Na implanted foil target and a Q3D spectrograph of high energy resolution. The angular distributions of deuteron groups corresponding to nineteen 23 Mg levels between E x = 6236 and 8076 keV have been measured at angles θ lab = 7.5° to 31° and lead to their proton spectroscopic factors using DWBA analysis. The 22 Na(p,γ) 23 Mg resonance strengths for unbound states near the proton threshold have been deduced. The resulting reaction rates significantly reduce previous uncertainties.

A study of 52V with the 51V(t, d) reaction

A 33 MeV tritium beam was used to induce the 51V(t, d) 52V reaction. Angular distributions of the differential cross sections were measured for 51 deuteron groups up to 6.5 MeV excitation energy in 52V. A further 14 states were identified below 10.7 MeV excitation. DWBA analyses of the results were employed to deduce angular momenta of the transferred neutron and the corresponding spectroscopic strengths. Shell-model calculations performed in the 0p-0h space give good descriptions of the experimental data.

Electron spin echo study of neodymium(3+) solvation geometry in ethanol glasses. Disorientation of molecular dipoles in the first solvation shell

Electron spin echo modulation (ESEM) studies have been carried out for Nd/sup 3 +/ in ethanol glasses at 4.2/sup 0/K. ESEM analysis of Nd/sup 3 +/ in CH/sub 3/CH/sub 2/OD indicates ninefold coordination of ethanol in the first solvation shell. By using the specifically deuterated ethanols CH/sub 3/CH/sub 2/OD, CH/sub 3/CD/sub 2/OH, and CD/sub 3/CH/sub 2/OH, ESEM analysis of deuterium modulation in three-pulse electron spin echo decay curves gives the distances to the various deuteron groups. These distances establish that the molecular dipole of ethanol is disoriented from Nd/sup 3 +/ by about 35/sup 0/. This contrasts with methanol solvation of Nd/sup 3 +/ where the methanol moleculr dipole is oriented toward Nd/sup 3 +/. The difference between methanol and ethanol solvation is attributed to steric interactions. 4 figures.

Vibrational states inCf250excited by the (d,d′) reaction

Collective states in /sup 250/Cf have been studied by inelastic deuteron scattering at 15 MeV. Deuterons scattered from a 10 ..mu..g/cm/sup 2/ /sup 250/Cf target were momentum analyzed with an Enge split-pole magnetic spectrograph. Spectra were recorded at angles of 90/sup 0/, 125/sup 0/, and 140/sup 0/ with respect to the incident beam. The differential cross sections and angular distributions of inelastic deuteron groups confirm the assignments of the previously known K..pi..=2- state at 872 keV and the K..pi..=2+ state at 1032 keV. Levels at 1211 and 1429 keV, which are strongly populated in the (d,d') reaction, are assigned as the 3- member of the K..pi..=1- and 3- bands, respectively. Reduced transition probabilities B (E2) and B (E3) have been extracted for the 2+ and 3- level and are compared with the predictions of microscopic theories of vibrational states.

High-spin analog resonances near theN=50neutron shell

The $^{96}\mathrm{Zr}(^{3}\mathrm{He},d)^{97}\mathrm{Nb}$ and the $^{92}\mathrm{Mo}(^{3}\mathrm{He},d)^{93}\mathrm{Tc}$ reactions, investigated at, respectively, 39.0 and 28.5 MeV incident energies, were used to populate selectively high-spin analog resonances in $^{97}\mathrm{Nb}$ and $^{93}\mathrm{Tc}$. Angular distributions were measured for the ${d}_{\frac{3}{2}}$, ${g}_{\frac{7}{2}}$, and ${h}_{\frac{11}{2}}$ analog states of the low-lying levels in $^{97}\mathrm{Zr}$. A distorted-wave Born-approximation analysis of the data for these unbound levels (using Gamow functions as form factors) was carried out and spectroscopic strengths extracted. The $^{96}\mathrm{Zr}(^{3}\mathrm{He},dp)$ and $^{92}\mathrm{Mo}(^{3}\mathrm{He},dp)$ reactions were performed, respectively, at 37.5 and 30 MeV incident energies. The angular distributions of the emitted protons were measured in coincidence using method II of Litherland and Ferguson with 0\ifmmode^\circ\else\textdegree\fi{} detection of deuteron groups. Spins, population parameters, and proton branching ratios to the ground state and excited states of the targets were determined from the analysis of the angular correlation data. The position of the neutron threshold as compared with the excitation energies of the analog states in $^{97}\mathrm{Nb}$ and $^{93}\mathrm{Tc}$ is found to be an important parameter in the extraction of the structure information on core-excited components in the parent levels wave functions. Neutron particle-hole multiplets based on the $({d}_{\frac{5}{2}})_{n}^{}{}_{}{}^{\ensuremath{-}1}\ensuremath{\bigotimes}({h}_{\frac{11}{2}})_{n}^{}{}_{}{}^{+1}$ and $({d}_{\frac{5}{2}})_{n}^{}{}_{}{}^{\ensuremath{-}1}\ensuremath{\bigotimes}({g}_{\frac{7}{2}})_{n}^{}{}_{}{}^{+1}$ configurations are observed for the first time in $^{96}\mathrm{Zr}$ through the decay of the ${g}_{\frac{7}{2}}$ and ${h}_{\frac{11}{2}}$ analog resonances. The limitation of the present method due to the neutron threshold or to the energy resolution in the proton channel is discussed and compared with the results of inelastic resonant scattering through isobaric analog resonances.NUCLEAR REACTIONS $^{92}\mathrm{Mo}(^{3}\mathrm{He},d)$ $E=28.5$ MeV; measured $\ensuremath{\sigma}({E}_{d},\ensuremath{\theta})$, $\ensuremath{\theta}=20\ifmmode^\circ\else\textdegree\fi{},35\ifmmode^\circ\else\textdegree\fi{}$. $^{96}\mathrm{Zr}(^{3}\mathrm{He},d)$ $E=39.0$ MeV; measured $\ensuremath{\sigma}({E}_{d},\ensuremath{\theta})$. $^{92}\mathrm{Mo}(^{3}\mathrm{He},d\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{p})$ $E=30$ MeV, $^{96}\mathrm{Zr}(^{3}\mathrm{He},d\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{p})$ $E=37.5$ MeV; measured $\ensuremath{\sigma}({E}_{d},{E}_{p},{\ensuremath{\theta}}_{P})$. $^{93}\mathrm{Tc}$, $^{97}\mathrm{Nb}$ deduced IAS, $L$, $J$, $\ensuremath{\pi}$, $S$, ${\ensuremath{\Gamma}}_{p}$, ${\ensuremath{\Gamma}}_{{p}^{\ensuremath{'}}}$. DWBA analysis using Gamow functions as form factors. Magnetic analysis. Enriched targets.

Hole states excited by theMg24(p,d)Mg23reaction at 95 MeV

Experimental excitation energies and angular distributions have been obtained for 33 deuteron groups from the $^{24}\mathrm{Mg}$($p$,$d$) reaction at 94.8-MeV bombarding energy with 80-keV experimental resolution. Energies obtained for states in $^{23}\mathrm{Mg}$ are in agreement with the sixth compilation of Endt and van der Leun up to 7.25 MeV and the recent unpublished ($p$,$t$) study of Nann et al. up to 9.72 MeV. Energies are determined in the present work for 18 additional groups corresponding to excitations between 9.8 and 13.28 MeV. Angular distributions from 6\ifmmode^\circ\else\textdegree\fi{} to 88\ifmmode^\circ\else\textdegree\fi{} laboratory (momentum transfers up to 660 MeV/c) show characteristic oscillatory signatures for $l=0$ transitions and broad peaked nonoscillatory behavior for presumed multistep transitions. $l=1 \mathrm{and} 2$ transitions show a very similar exponential falloff with large momentum transfer, but they can be clearly distinguished by their small-angle behavior after division by an empirical exponential factor or by the dominant momentum transfer dependence from a plane-wave analysis. $l=1$ transitions are observed to deep-hole states at 8.91-, 9.02-, 9.67-, and 10.57-MeV excitation. The angular distributions also lead to very probable assignments of $\frac{5}{{2}^{\ensuremath{-}}}$ and $\frac{7}{{2}^{+}}$ to the 3.97- and 4.68-MeV states of $^{23}\mathrm{Mg}$, and are consistent with $\frac{9}{{2}^{+}}$ and $\frac{11}{{2}^{+}}$ assignments to the 2.71- and 5.45-MeV states. Distorted-wave Born approximation (DWBA) predictions using optical potentials from published elastic scattering results show rather good agreement with the shapes of the observed angular distributions for $l=2$ transitions, but spectroscopic factors vary by up to a factor of 3 depending on the deuteron potential employed. $l=0$ transitions are not fitted in either shape or position of the oscillations, which may be due to the fact that deuteron wave functions derived from elastic scattering are not accurate in the nuclear interior. Reasonable shapes are predicted by preliminary coupled-channel Born approximation (CCBA) analyses for transitions believed to proceed in two steps.NUCLEAR REACTIONS $^{24}\mathrm{Mg}$ ($p$,$d$), $E=94.8$ MeV; measured $\ensuremath{\sigma}(\ensuremath{\theta})$. $^{23}\mathrm{Mg}$ levels deduced $l$, $J$, $\ensuremath{\pi}$. $S$. DWBA analysis, resolution 80 keV, $\ensuremath{\theta}=6\ifmmode^\circ\else\textdegree\fi{}\ensuremath{-}88\ifmmode^\circ\else\textdegree\fi{}$, $\ensuremath{\Delta}\ensuremath{\theta}=2\ifmmode^\circ\else\textdegree\fi{} or 4\ifmmode^\circ\else\textdegree\fi{}$, ${E}_{x}=0\ensuremath{-}13.28$ MeV.

A study of the two-particle states in 42Sc from the 41Ca( 3He, d) reaction

Energy levels in 42Sc have been studied in the proton stripping reaction 41Ca( 3He, d) 42Sc at a bombarding energy of 20 MeV with an energy resolution of about 10 keV. A total of 90 levels were identified below 6 MeV excitation energy. Differential cross sections were measured as a function of reaction anngle, and l-values and spectroscopic strengths were deduced from a DWBA analysis. T = 1 states with f 7 2 2 and f 7 2 p 3 2 configurations were identified from a comparison of the spectroscopic results from the present 41Ca( 3He, d) experiment and previous 41Ca(d, p) studies. The individual spectroscopic strengths for the two members of the 0.62 MeV 1 + + 7 + unresolved doublet were determined by a measurement of the deexcitation γ-rays in prompt coincidence with the relevant reaction deuteron group. he results are discussed in terms of sum rules, and effective two-body interaction matrix elements are derived. The spectroscopic strengths for the low-lying transitions agree with the predictions from the coexistence model.

35Cl,37Cl and36Ar(n,d) reactions at 14.1 MeV

Absolute angular distribution measurements have been made at 14.1 MeV for the proton pick-up reactions 35Cl(n,d)34S ground state and 34S* (2.127 MeV), 37Cl(n,d)36S ground state, and 36Ar(n,d)35Cl ground state and 35Cl* (1.219 and 1.763 MeV). Isotopically-enriched chlorine targets were used to avoid the overlapping of deuteron groups which occurred in earlier (n,d) experiments with natural chlorine targets. Spectroscopic factors were extracted from the data using DWBA analysis and were compared with previous (n,d) and (d,3He) experimental determinations and with theoretical calculations.

Spectroscopic study of 55Co via the 54Fe(τ, d) 55Co and 54Fe(τ, dp̃) 54Fe reactions

The 54Fe(τ, d) 55Co reaction has been studied at 25 MeV incident energy with a split-pole spectrometer. About one hundred levels have been observed in 55Co up to 10 MeV excitation energy. Angular distributions have been measured and analyzed with DWBA and Gamow functions as form factors for unbound levels. The 54Fe(τ,dp̃) 54 reaction has been investigated at 24 MeV incident energy. The angular distributions of the emitted protons were measured in coincidence using method 2 of Litherland and Ferguson, with 0 detection of deuteron groups. Spins, population parameters, branching ratios and proton partial widths for the transitions to the ground and excited states of 54Fe were determined from the analysis of the angular correlation data. The results of these two experiments provide a large number ofspectroscopic properties of unbound proton states and in particular of analog states of 55Fe low-lying levels. The IAS of the 3 2 − ground state of 55Fe is observed to be split between two individual levels. The amplitude of neutron coupling to the first 2 + excited state of 54Fe is obtained for the lg 9 2 and 2 d 5 2 low-lying parent statfes in 55Fe. summed spectroscopic factors and the centroid energies of the proton states in 55Co are obtained. A comparison is made with previous (τ, d), (d, p) and (p, p) results.

Neutron orbit sizes from measurements of the60Ni(t,d) reaction in the sub-Coulomb regime

Angular distributions of the deuteron groups from the 60Ni(t,d) reaction populating the Jpi =3-/2 ground state, the Jpi =3-/2 first excited state at 68 keV and the Jpi =1-/2 second excited state at 284 keV of the final nucleus, 61Ni, have been measured at incident energies near the Coulomb barrier of 2.5, 3.0, 3.5 and 4.0 MeV. Values of the root-mean-square radii of the orbits into which the neutron is transferred (2p32/, 1f52/, and 2p12/) are obtained from a DWBA analysis of the data. The sensitivity of the results to variations in the optical-model parameters and uncertainties in the single neutron spectroscopic factors of the states excited is discussed. A comparison is made of the RMS radius of the neutron excess in 62Ni, calculated from the results of this work, with the value extracted from the Coulomb energy difference of the 62Ni-62Cu pair.

Unbound isobaric analog states inMn53: The reactionsCr52(He3,d)Mn53andCr52(He3,dp)Cr52

The $^{52}\mathrm{Cr}(^{3}\mathrm{He},d)^{53}\mathrm{Mn}$ reaction investigated at 25 MeV incident energy with a split pole spectrometer was used to populate highly excited analog states in $^{53}\mathrm{Mn}$. Fifty-two levels between 6.9 and 12.0 MeV excitation energy were observed in $^{53}\mathrm{Mn}$. The main components of the ${T}_{>}2{p}_{\frac{3}{2}}$, $2{p}_{\frac{1}{2}}$, $1{f}_{\frac{5}{2}}$, and $1{g}_{\frac{9}{2}}$ single-particle strengths were identified. Angular distributions of transitions to 38 unbound-levels in $^{53}\mathrm{Mn}$ have been extracted and analyzed with distorted-wave Born approximation and Gamov functions (as form factors for the transferred proton) to yield the absolute spectroscopic strength. An appreciable amount of the missing $2{p}_{\frac{3}{2}}$, $2{p}_{\frac{1}{2}}$, and $1{f}_{\frac{5}{2}}$ proton ${T}_{<}$ strengths is observed in $^{53}\mathrm{Mn}$ between 7.0 and 8.5 MeV whereas a small fraction of the $1{g}_{\frac{9}{2}}$ and $2{d}_{\frac{5}{2}}$ single-particle orbitals appears between 7.0 and 12 MeV excitation energy. The $^{52}\mathrm{Cr}(^{3}\mathrm{He},dp)^{52}\mathrm{Cr}$ reaction was performed at 24 MeV incident energy using a triplet of magnetic quadrupole lenses. The angular correlations of the emitted protons were measured in coincidence using method II of Litherland and Ferguson with zero degree detection of deuteron groups. Spins, population parameters, and branching ratios of proton partial widths to the ground and excited states of the target were determined for 14 unbound levels in $^{53}\mathrm{Mn}$ from the analysis of the angular correlation data. These two experiments provide a rather complete description of the spectroscopic properties of the analog of the levels of $^{53}\mathrm{Cr}$ up to 5.0 MeV excitation energy. A comparison is made with the previous ($^{3}\mathrm{He},d$), ($p,\ensuremath{\gamma}$), ($p,p$), and ($d,p$) results on the same target. Components of the $^{53}\mathrm{Cr}$ parent states which consist of a neutron coupled to an excited state of the $^{52}\mathrm{Cr}$ nucleus are also determined.NUCLEAR REACTIONS $^{52}\mathrm{Cr}(^{3}\mathrm{He},d)$, $E=25$ MeV; measured $\ensuremath{\sigma}({E}_{d},\ensuremath{\theta})$, $^{52}\mathrm{Cr}(^{3}\mathrm{He},dp)$, $E=24$ MeV; measured $\ensuremath{\sigma}({E}_{d},{E}_{p},{\ensuremath{\theta}}_{p})$. $^{53}\mathrm{Mn}$ deduced IAS, $L$, $J$, $\ensuremath{\pi}$, $S$, ${\ensuremath{\Gamma}}_{p}$, proton branching. $^{53}\mathrm{Cr}$, $^{53}\mathrm{Mn}$ analog pairs deduced Coulomb displacement energies. DWBA analysis using Gamov functions as form factors. Natural targets.

Proton states in 59Cu and structure of the 59Cu- 59Ni analog pair

The 58Ni(τ, d) stripping reaction has been studied at 25 MeV incident energy for 59Cu levels located above the proton threshold with a split-pole spectrometer. Seventy-four states between 3.8 and 9.0 MeV excitation energy were observed in 59Cu. The main components of the 2 p 3 2 , 2 p 1 2 , 1 f 5 2 , 1 g 9 2 and 2 d 5 2 analog states of 59Ni levels were identified. Angular distributions of transitions to 67 unbound levels in 59Cu have been extracted and analysed with DWBA and Gamow functions as form factors to yield absolute spectroscopic strength. The 58Ni(τ, dp̃) was performed at 24 MeV incident energy. The angular distributions of the emitted protons were measured in coincidence using method II of Litherland and Ferguson with 0° detection of deuteron groups. Spins, population parameters and branching ratios of proton partial widths to the ground and excited states of the target were determined from the analysis of the angular correlation data. The results of these two experiments provide a large number of spectroscopic properties of proton states in 59Cu and in particular of analog levels of 59Ni low-lying states. The p 3 2 , g 9 2 and d 5 2 IAS are observed to be fragmented into at least two individual levels. The summed spectroscopic factors and the centroid energies of the proton states in 59Cu are obtained. A comparison is made with the previous (τ, d), (p, γ), (p, p) and (d, p) results on the same target. The amplitudes of neutron coupling to the first 2 + excited state in 58Ni are also determined for the g 9 2 and d 5 2 isobaric analog states in 59Cu.

Spectroscopic studies of unbound isobaric analog states in49V and51V via the48, 50Ti(τ, d) and the48, 50Ti(τ, dp˜) reactions

The48, 50Ti(τ, d) reactions, investigated at 25 MeV incident energy with a split pole spectrometer, were used to populate highly excited analog states in51V and some levels in49V. Angular distributions were measured for the p3/2,p1/2,f5/2 and g9/2, analog states of 51Ti levels and for some strong analog transitions in 49V. A DWBA analysis of the data for these unbound levels (using Gamov functions as form factors) was carried out and spectroscopic strengths extracted. The 48,50Ti(τ, dp˜) reaction was performed at 25.5 MeV incident energy. The angular distributions of the emitted protons were measured in coincidence using method II of Litherland and Ferguson with 0° detection of deuteron groups. Spins, population parameters and branching ratios of proton partial widths to the ground and excited states of the target were determined from the analysis of the angular correlation data. The combined results of these two experiments provide a complete set of spectroscopic data concerning the analog states in 49V and 51V. A comparison is made with the previous (p, γ), (p, p), (p, p') and (d, p) results on the same targets. The amplitudes of neutron coupling to excited states of 48Ti and 50Ti nuclei are also determined for the f5/2 and g9/2 isobaric analog states in 51V and p3/2 and d5/2 analog levels of 49Ti states.

The (τ,d), (d, p) and (d, n) reactions on28Si

The28Si(τ,d)29P reaction and the28Si(τ, τ)28Si elastic scattering are performed at a bombarding energy of 35.3 MeV; angular distributions are obtained for 13 deuteron groups, up to an excitation energy of 7.5 MeV in29P.

The43Ca(3He, d) reaction and the parity of the 425 keV state of44Sc

The Harwell multi-angle magnetic spectrograph and tandem accelerator have been used to study the 425 keV state of 44Sc populated in the 43Ca(3He, d)44Sc reaction. Comparison of the measured angular distribution of the deuteron group populating the 425 keV state with predictions based on the distorted wave Born approximation suggests that population of the state proceeds by l=2 proton transfer. The consequent assignment of negative parity to the 425 keV state removes an inconsistency which has existed within earlier particle transfer reaction studies of this state.

F19 (He3,d)Ne20Reaction at 20-23 MeV

14 deuteron groups populating levels to 10.26 MeV excitation in $^{20}\mathrm{Ne}$ have been measured with the $^{19}\mathrm{F} (^{3}\mathrm{He},d)^{20}\mathrm{Ne}$ reaction. Excitation functions measured at ${\ensuremath{\theta}}_{\mathrm{lab}}=25 \mathrm{and} {45}^{\ensuremath{\circ}}$ from 20.0 to 21.2 MeV reveal little structure, and therefore probably little compound-nuclear contribution to the observed cross sections for the deuteron groups. In particular, the ${2}^{\ensuremath{-}}$ level at 4.97 MeV excitation, strongly populated at ${E}_{{3}_{\mathrm{He}}}=10$ MeV, is weakly populated in the present energy range. The "$j$-forbidden" ${4}^{+}$ level at 4.25 MeV excitation, on the other hand, is strongly populated in the present energy range. A collective-model coupled-channel Born-approximation analysis of angular distributions measured at ${E}_{{3}_{\mathrm{He}}}=21 \mathrm{and} 23$ MeV is better able to explain the data than distorted-wave Born-approximation analysis for the positive-parity states. The negative-parity states are poorly described by both theories.[NUCLEAR REACTIONS $^{19}\mathrm{F} (^{3}\mathrm{He},d)$, $E=20\ensuremath{-}23$ MeV; measured $\ensuremath{\sigma}(E,\ensuremath{\theta})$, deduced $S$. DWBA and CCBA analysis; $\ensuremath{\theta}=20\ensuremath{-}{150}^{\ensuremath{\circ}}$, $\ensuremath{\Delta}\ensuremath{\theta}={5}^{\ensuremath{\circ}}$.]

Xe136(p,p′)Xe136andXe136(p,d)Xe135Reactions

Low-lying states of $^{136}\mathrm{Xe}$ with excitation energies up to 3.3 MeV are investigated via inelastic scattering of 13.982-MeV protons. Spin, parity, and deformation parameters are extracted for 13 excited states through distorted-wave Born-approximation (DWBA) analysis using a collective-model form factor. The results obtained indicate that $^{136}\mathrm{Xe}$ is not a typical vibrational nucleus. A microscopic calculation for the level spectrum and the inelastic form factor, based on the quasiparticle random-phase approximation, is performed. DWBA angular distributions are calculated using a microscopic form factor. The level spectrum and the absolute magnitudes of the cross sections for most of the ${4}^{+}$, ${6}^{+}$, and ${3}^{\ensuremath{-}}$ observed states are reasonably well reproduced through these calculations. For the ${2}^{+}$ states, however, the predicted level density and the distribution of the inelastic strengths disagree with the observed data. In addition, three deuteron groups leading to states of $^{135}\mathrm{Xe}$ are observed. The orbital-angular-momentum-transfer values and the spectroscopic factors for these states are obtained through DWBA analysis of the data.

A study of the113In(3He, d)114Sn reaction at 37.7 MeV

The proton particle-hole states of 114Sn have been studied by the 113In(3He,d)114Sn reaction at 37.7 MeV. A 113In(3He, 3He)113In elastic scattering experiment provided 3He optical model parameters for the DWBA analysis. The ground state and seven excited states of 114Sn yielded deuteron groups which could be analysed in terms of angular momentum transfers of l=2 or l=4. These transferred protons are believed to occupy 2d5/2 or 1g7/2 orbitals and to couple with a 1g9/2 proton hole. Partial strengths extracted from the angular distributions are consistent with the results obtained on 115In(3He,d)116Sn by Biggerstaff et al. (1967) but not with those of Shoup et al. (1969).

(He3,d) Reaction to Bound and Quasibound Levels inTc93

The $^{92}\mathrm{Mo}(^{3}\mathrm{He},d)^{93}\mathrm{Tc}$ reaction has been studied at 35-MeV bombarding energy. Several ${T}_{<}$ levels are observed below 6-MeV excitation energy, and evidence is presented for sizable $p_{\frac{3}{2}}^{}{}_{}{}^{\ensuremath{-}2}$ and $f_{\frac{5}{2}}^{}{}_{}{}^{\ensuremath{-}2}$ components in the $^{92}\mathrm{Mo}$ proton configuration. Four deuteron groups, corresponding to ${T}_{>}=\frac{9}{2}$ analogs of low-lying levels in $^{93}\mathrm{Mo}$ are also observed. Distorted-wave Born-approximation calculations were performed, using form factors calculated for a proton quasibound by the Coulomb and centrifugal barrier for the proton-unstable levels (\ensuremath{\ge}4.08-MeV excitation energy). The data are well described by the calculations, and reasonable spectroscopic factors are obtained for both ${T}_{<}$ and ${T}_{>}$ levels.

Structure information on 26Mg from the 26Mg(p, d)25Mg reaction at 20 MeV

Abstract The angular distributions of 26Mg(p, d)25Mg deuteron groups to the levels in 25Mg up to 3.903 MeV, which were resolved with 30 keV resolution, were compared with DWBA pick-up theory. Several levels, particularly those which are weakly populated do not fit well. A spectroscopic factor analysis was made where 25Mg was assumed to consist of a deformed core with the odd neutron in a mixture of all possible N = 2 Nilsson states. The band-head spectroscopic factors then gave the filling of Nilsson states in 26Mg, as V9 = 0.57, V11 = 0.30 and V5 = 0.78. Good agreement with the spectroscopic factors for the other N = 2 particle states in 25Mg was found. However the 7 2 + and 9 2 + levels appear much more strongly than would be predicted by direct neutron pick-up theory.