The neutron beams generated at the electrostatic accelerators using nuclear reactions T(p,n)3 He, D(d,n)3 He, 7 Li(p,n)7 Be, T(d,n)4 He, 7 Li(d,n)8 Be, 9 Be(d,n)10 B are widely used in neutron physics and in many practical applications. Among these reactions the least studied reactions are 7 Li(d,n)8 Be and 9 Be(d,n)10 B. The present work is devoted to the measurement of the neutron spectrum from 7 Li(d,n)8 Be reaction at 0∘ angle to the deuteron beam axis on the electrostatic accelerator Tandetron (JSC “SSC RF – IPPE”) using activation method and a stilbene crystal scintillation detector. The first time ever 7 Li(d,n)8 Be reaction was measured by activation method. The target was a thick lithium layer on metallic backing. The energy of the incident deuteron was 2.9 MeV. As activation detectors a wide range of nuclear reactions were used: 27 Al(n,p)27 Mg, 27 Al(n,α)24 Na, 113 In(n,n')113m In, 115 In(n,n')115m In, 115 In(n,γ)116m In, 58 Ni(n,p)58m Co, 58 Ni(n,2n)57 Ni, 197 Au(n,γ)198 Au, 197 Au(n,2n)196 Au, 59 Co(n,p)59 Fe, 59 Co(n,2n)58m+g Co, 59 Co (n,g)60 Co. Measurement of the induced gamma-activity was carried out using HPGe detector Canberra GX5019 [1]. The up-to-date evaluations of the cross sections for these reactions were used in processing of the data. The program STAYSL was used to unfold the energy spectra. The neutron spectra obtained by activation detectors is consistent with the corresponding data measured by a stilbene crystal scintillation detector within their uncertainties.