C.B. Franklyn

South African Nuclear Energy Corporation (South Africa)

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R. K. W. Merkle

All-Russian Research Geological Oil Institute

Robert W. Hamm

Creative Research Enterprises (United States)

D. Hill

École Polytechnique Fédérale de Lausanne

D.T. Williams

Daresbury Laboratory

G.C. Daniels

South African Nuclear Energy Corporation (South Africa)

D.W. Mingay

South African Nuclear Energy Corporation (South Africa)

W.R. Gibson

Queen Mary University of London

W. J. Strydom

South African Nuclear Energy Corporation (South Africa)

P.R. Berndt

Nelson Mandela University

A. Astbury

Mersey Care NHS Trust

Cooperative Institutions

South African Nuclear Energy Corporation (South Africa)

Queen Mary University of London

De Beers (South Africa)

European Organization for Nuclear Research

Rutherford Appleton Laboratory

University of the Witwatersrand

Institut Laue-Langevin

iThemba Laboratory

Daresbury Laboratory

University of London

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74Ge: Transitions and levels excited in thermal-neutron capture

AIP conference proceedings (1985)

C. Hofmeyr C.B. Franklyn G. Barreau Hans G. Börner R. Brissot

Gamma‐ray transitions due to thermal‐neutron capture in 73Ge were measured at ILL, Grenoble, using the curved‐crystal spectrometers GAMS 1, 2 and 3, a pair spectrometer and a Ge(Li) spectrometer. Some 750 transitions were identified, of which 450 were placed in a level and decay scheme with the aid of an interactive program. Selected energy regions were scanned with the internal‐conversion electron spectrometer BILL, yielding 18 transitions corresponding to δ‐rays and sixteen unmatched candidates. The levels up to 4 MeV are presented together with the degree of corroboration obtained from published (p, t) and (t, p) results and β‐decay data.

10.1063/1.35120

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Citations (1)

a Study of Prompt Neutron Emission in Thermal Neutron-Induced Fission of URANIUM-235.

C.B. Franklyn

Uranium-235

Fast fission

Long-lived fission product

Prompt neutron

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Angular correlation of neutrons from thermal-neutron fission of 235U

Physics Letters B (1978)

C.B. Franklyn C. Hofmeyer D.W. Mingay

Prompt neutron

10.1016/0370-2693(78)90640-8

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Citations (34)

Measurement of the polarization parameter for antiproton-proton annihilation into charged pion and kaon pairs between 1.0 and 2.2 GeV/c

Nuclear Physics B (1977)

A.A. Carter M. Coupland E. Eisenhandler C.B. Franklyn W.R. Gibson

Antiproton

Annihilation

10.1016/0550-3213(77)90212-7

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Citations (26)

Use of Be(p,α) and Be(p,d) Reactions to Determine Be Content in Sapphire

AIP conference proceedings (2011)

C.B. Franklyn Marianne E. Hamm Robert W. Hamm

Since natural coloured sapphire (α‐Al2O3) commands a high gem stone market price there is a need for a reliable method of identifying artificially coloured sapphire that has an inherently lower value. Diffusing beryllium into sapphire at high temperatures results in a coloured stone virtually indistinguishable from a natural one. Beryllium can occur naturally in sapphire but at levels of <1 ppma. Beryllium diffused sapphire typically contains >10 ppma, which is difficult to determine in a non destructive way. It is possible to utilize nuclear reaction analysis techniques to determine the beryllium content in a macroscopically non destructive way. Kinematically ideal reactions are Be(p,α) and Be(p,d) which, for Ep = 0.5 to 0.9 MeV, exhibit distinct reaction product signatures well separated from other proton induced reactions in aluminium or oxygen. Due to the lack of comprehensive cross section data for the Be(p,α) and Be(p,d) reactions in the energy range of interest, a series of measurements were made at the Van de Graaff accelerator facility at Necsa to create a new data base. A further outcome of these measurements was a deviation in reported values for the non‐Rutherfordian proton back‐scatter cross section. These new data bases, which extend to Ep = 2.6MeV, can now facilitate a procedure for determining beryllium content in sapphire.

10.1063/1.3665302

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Neutron-fragment angular correlations in /sup 235/U(n/sub th/,f)

C.B. Franklyn

Fragment (logic)

Uranium-235

Source

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Measurement of the polarization parameter for antiproton-proton annihilation into charged π and K pairs between 1.0 and 2.2 GeV/c

AIP conference proceedings (1976)

A. A. Carter M. Coupland E. Eisenhandler C.B. Franklyn W.R. Gibson

The production parameter for the interactions p̄p→π−π+ and p̄p→K−K+ has been measured over essentially the full angular range at 11 momenta between 1.0 and 2.2 GeV/c. A proton target polarized perpendicular to the scattering plane was used. The experiment measured the angles and momenta of both outgoing particles using wire spark chambers and the field of the polarized target magnet. Between 1000 and 5300 π−π+ event, and 140 and 1300 K−K+ events, were measured at each mementum. As a check, we obtained differential cross‐sections for p̄p→−+ which are in excellent agreement with previous results. The polarizations for both channels are very large and positive over much of the angular range. Preliminary results of a fit to the cross‐sections and asymmetries for p̄p→π−π+ show strong evidence for three new resonances: JP−3−, IG=1+,M?2.14GeV/c2 JP=5−, IG=1+, M?2.36 GeV/c2 JP=4+, IG=0+, M?2.40 GeV/c2

Antiproton

Annihilation

10.1063/1.31024

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Citations (0)

Milli-PIXE determination of trace elements in osmium-rich platinum-group minerals from the Witwatersrand basin, South Africa

Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms (1999)

R. K. W. Merkle C.B. Franklyn

Osmium

Platinum group

10.1016/s0168-583x(99)00499-1

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