Atomic Energy Research Institute Research Articles

F‐Centre Production in Mixed Alkali Halide Crystals as Evidence for the Importance of a Replacement Collision Sequence in F‐Centre Production

physica status solidi (b)Volume 32, Issue 2 p. K147-K150 Short Note F-Centre Production in Mixed Alkali Halide Crystals as Evidence for the Importance of a Replacement Collision Sequence in F-Centre Production P. B. Still, P. B. Still Solid State Division, Atomic Energy Research Establishment, Harwell, Didcot, BerkshireSearch for more papers by this authorD. Pooley, D. Pooley Solid State Division, Atomic Energy Research Establishment, Harwell, Didcot, BerkshireSearch for more papers by this author P. B. Still, P. B. Still Solid State Division, Atomic Energy Research Establishment, Harwell, Didcot, BerkshireSearch for more papers by this authorD. Pooley, D. Pooley Solid State Division, Atomic Energy Research Establishment, Harwell, Didcot, BerkshireSearch for more papers by this author First published: 1969 https://doi.org/10.1002/pssb.19690320253Citations: 21AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume32, Issue21969Pages K147-K150 RelatedInformation

Surgical aspects of renal artery stenosis.

Forthcoming Events and Other NoticesPublished Online:28 Jan 2014https://doi.org/10.1259/0007-1285-41-487-559SectionsPDF/EPUB ToolsAdd to favoritesDownload CitationsTrack Citations ShareShare onFacebookTwitterLinked InEmail AboutAbstractA co-ordinated course involving periods of study at the Atomic Energy Research Establishment, Harwell, the University of Cambridge and London Hospitals and Institutes, is being arranged for the period September 16 to October 18, 1968. Two weeks of the course will be spent at the Postgraduate Education Centre at Harwell, followed by two weeks at the Postgraduate Medical School at Cambridge and one week in London with visits to Hammersmith Hospital, Middlesex Hospital and the Royal Marsden Hospital and Institute of Cancer Research. Previous article Next article FiguresReferencesRelatedDetails Volume 41, Issue 487July 1968Pages: 481-560 © The British Institute of Radiology History Published onlineJanuary 28,2014 Metrics Download PDF

A phosphor-film technique to determine the activity of individual particles on air sample filters.

A Phosphor-Film Technique to Determine the Activity of Individual Particles on Air Sample Filters Get access R. J. Sherwood, R. J. Sherwood Health Physics & Medical Division, U.K.A.E.A. Research Group, Atomic Energy Research Establishment, Harwell Search for other works by this author on: Oxford Academic PubMed Google Scholar D. C. Stevens D. C. Stevens Health Physics & Medical Division, U.K.A.E.A. Research Group, Atomic Energy Research Establishment, Harwell Search for other works by this author on: Oxford Academic PubMed Google Scholar The Annals of Occupational Hygiene, Volume 11, Issue 1, January 1968, Pages 7–12, https://doi.org/10.1093/annhyg/11.1.7 Published: 01 January 1968 Article history Received: 05 June 1967 Published: 01 January 1968

Luminescent Properties of Rocks, Meteorites and Natural Glasses under Proton Bombardment

SUGGESTIONS that some transient lunar events1 are luminescent phenomena, excited by solar protons, have aroused interest in the luminescent properties of putative lunar surface materials. We have studied the luminescence produced in various minerals and meteorites by a beam of 146 MeV protons from the Atomic Energy Research Establishment synchrocyclotron. Both our proton flux, about 108 protons sec−1 cm−2, and the ionization density are many orders of magnitude lower than those used by other workers2–4; thus we avoid their problems of radiation damage and simulate more closely the conditions on the Moon's surface.

The United Kingdom Atomic Energy Authority RIPPLE Program

This paper reviews the work carried out at the Atomic Energy Research Establishment (AERE) since 1963 in connection with the development of isotope-powered thermoelectric generators, known as RIPPLEs. It outlines the criteria considered for the selection of strontium 90 as the radioisotope, the design of the generators, the choice of material for the biological shield, and the development of the thermal insulation. It briefly discusses the voltage conversion system employed and states safety design considerations. The paper concludes by discussing the effect of efficiency on the cost of generators and shows typical costs curves.

Twenty-one Years at Harwell

The U.K. Atomic Energy Research Establishment is now 21 years old. For much of that time it has been responsible for basic research in the United Kingdom on atomic energy. But it has also grown to be a national institution. Dr. Spence is its fourth director.

Atomic Energy Research Establishment, Harwell: Dr. W. C. Marshall

Atomic Energy Research Establishment, Harwell: Dr. W. C. Marshall

The Cascade Centripeter

Journal Article The Cascade Centripeter Get access R. F. Hounam R. F. Hounam Health Physics & Medical Division, Atomic Energy Research Establishment, Harwell Search for other works by this author on: Oxford Academic PubMed Google Scholar The Annals of Occupational Hygiene, Volume 8, Issue 4, November 1965, Page 335, https://doi.org/10.1093/annhyg/8.4.335 Published: 01 November 1965

Neutron dosimetry using gold and sulphur: the calibration of a Geiger-M ller counter

The efficiency of an end window Geiger-Müller counter has been determined for the measurement of gold foil and sulphur disk beta activities to enable slow and fast neutron fluxes to be estimated from a personnel dosimeter, designed at the Atomic Energy Research Establishment, Harwell, for general use in the Atomic Energy Authority.

ASLIB PROCEEDINGS

Hearty congratulations are extended to Miss M. Gosset, B.SC., A.R.C.S., who has received the M.B.E. in the Birthday Honours. Miss Gosset, who is Librarian of the Atomic Energy Research Establishment, Harwell, is a member of Aslib Council and is well known to Aslib members through her attendance at conferences and meetings and her generous service on Aslib Committees.

Letter to the Editor

Dear Madam, We have recently completed in the Report Room of the Library of the Atomic Energy Research Establishment, Harwell, an analysis of the extent to which report literature in paper form (i.e. exclusive of microforms) over four years old is used, as shown by records kept during the year 1963. The results are of course primarily of interest to ourselves as an aid to deciding retention periods for various types of report but they may also be of interest to other libraries with large report collections. The figures are shown in the table.

Nimrod

Nimrod is a constant-gradient or weak-focusing proton synchrotron, designed for a maximum energy of 7 GeV, at the Rutherford High Energy Laboratory of the National Institute for Research in Nuclear Science near the Atomic Energy Research Establishment, Harwell. The final decisions on the design of the most important features of the machine were made early in 1957, and construction was begun in July of that year. A general view of Nimrod is shown in figure 95, plate 35. Protons are accelerated to an energy of 15 MeV in a linear accelerator (figure 99, plate 37), and are then injected into the magnet ring of the main accelerator with the help of an achromatic system of bending magnets and deflecting electrodes. This injection system also contains matching lenses, consisting of quadrapole magnets, to assist in transferring the maximum number of protons from the injector into the magnet ring. The magnet ring has a diameter of 150 ft., and is divided into eight sectors separated by field-free sections for convenience in inj ecting, accelerating and extracting the proton beam (figure 97, plate 36). The magnet weighs 7000 tons and is laminated in the usual way to reduce effects due to eddycurrents as the magnetic field rises during acceleration. It is a feature of weakfocusing synchrotrons that a large magnet aperture is required to contain the proton beam, and in Nimrod the useful aperture is 36 in. radially by 9 in. vertically. The large aperture has the advantage that injection can take place over a relatively long time as the injected protons spiral inwards in a slowly rising magnetic field, thus giving a high beam intensity. In Nimrod, the injection time can be adjusted between limits of 200 p,s and 2 ms; there will be an optimum time, to be determined by operational experience.

Semiconductor Counters for Nuclear Radiations

By G. Dearnaley and D. C. Northrop London: E. & F. N. Spon Ltd. 1963. Pp. xx + 331. Price 55s. The authors, a nuclear physicist at the Atomic Energy Research Establishment, Harwell, and a solid-state physicist at the Services Electronics Research Laboratory, Baldock, have produced a useful book on the expanding subject of semiconductor nuclear counters. A compact summary of the properties of ionizing radiations and their interactions with matter is followed by a discussion of methods of detection ranging over gas-filled counters, scintillation counters, nuclear emulsions, neutron detectors and spark chambers.

Unconventional methods of electricity generation

An article based on a paper with the above title, which is published this month in the Proceedings. A lecture on which the paper is based was given before the Science and General andPower Divisions on the 2nd April 1963 at Savoy Place. Mr. Dunn is at the Atomic Energy ResearchEstablishment, and Mr. Wright is at the Central Electricity Research Laboratory.

Nuclear Graphite

"Nuclear Graphite." Nuclear Science and Engineering, 17(1), pp. 173–174 Additional informationNotes on contributorsJ. H. W. SimmonsThe reviewer is a physicist working in the Metallurgy Division of the Atomic Energy Research Establishment, Harwell. He joined the Harwell staff in 1946 after a period of war-time work on radar. At Harwell he has been associated with research into the effect of irradiation on graphite. This work has led to the development of a model for the dimensional changes of graphite, which has had important practical applications, and to advances in the theory of radiation damage, notably in the study of the nucleation and growth of radiation defects.

“Harwell”-A film about the atomic energy research establishment

(1963). “Harwell”-A film about the atomic energy research establishment. Contemporary Physics: Vol. 4, No. 6, pp. 462-462.

Health Physics Services at the Atomic Energy Research Establishment, Harwell

Journal Article Health Physics Services at the Atomic Energy Research Establishment, Harwell Get access N. G. Stewart, N. G. Stewart Health Physics and Medical Division, A.E.R.E. , Harwell Search for other works by this author on: Oxford Academic PubMed Google Scholar J. E. Johnston J. E. Johnston Health Physics and Medical Division, A.E.R.E. , Harwell Search for other works by this author on: Oxford Academic PubMed Google Scholar The Annals of Occupational Hygiene, Volume 6, Issue 3, 1963, Pages 153–161, https://doi.org/10.1093/annhyg/6.3.153 Published: 01 August 1963

Low-lying energy levels in ferromagnetic metals: Eric D. Thompson, Atomic Energy Research Establishment, Harwell, Didcot, Berks, England

Low-lying energy levels in ferromagnetic metals: Eric D. Thompson, Atomic Energy Research Establishment, Harwell, Didcot, Berks, England

Analysis of tantalum and niobium by neutron activation of short-lived radionuclides: Chaong Kuk Kim, Atomic Energy Research Institute, Seoul, Korea

Analysis of tantalum and niobium by neutron activation of short-lived radionuclides: Chaong Kuk Kim, Atomic Energy Research Institute, Seoul, Korea

Short-lived radioisotope production, processing, distribution and applications in Korea: C. K. Kim, Atomic Energy Research Institute, Seoul, Korea

Short-lived radioisotope production, processing, distribution and applications in Korea: C. K. Kim, Atomic Energy Research Institute, Seoul, Korea