Author
I.S. Grant
Bio: I.S. Grant is an academic researcher from University of Manchester. The author has contributed to research in topics: Fission & Nuclear fission product. The author has an hindex of 3, co-authored 4 publications receiving 61 citations.
Papers
More filters
TL;DR: In this article, the authors used a pre-equilibrium process to explain the observed isomer ratios in 93 Tc 96 Tc from the reactions 93 Nb( α, xn ) with a statistically-equilibrated compound nucleus.
40 citations
TL;DR: Isomer ratios in antimony and bromine fission fragments have been measured in the (12C+209Bi), ( alpha +204Pb) and (12 C+196Pt) reactions, the values of the isomer ratios and their variation with energy are in accordance with the fragment angular momenta predicted by the Fermi gas model for the fissioning nucleus as discussed by the authors.
Abstract: Isomer ratios in antimony and bromine fission fragments have been measured in the (12C+209Bi), ( alpha +204Pb) and (12C+196Pt) reactions, The values of the isomer ratios and their variation with energy are in accordance with the fragment angular momenta predicted by the Fermi gas model for the fissioning nucleus.
13 citations
TL;DR: In this article, the FWHM of the charge dispersion curve is about 1·6 charge units, and appears to be independent of fission product mass number and excitation energy in the compound nucleus.
6 citations
TL;DR: In this paper, the authors measured six radioactive products formed in the reaction between 93 Nb and 4 He ions in the energy range 15-72 MeV and provided agreement between experimental values and theoretical calculations only if allowance was made for pre-equilibrium (PE) nucleon emission.
4 citations
Cited by
More filters
TL;DR: Thick-target yield values were calculated and optimised, by numerical fitting and integration of the measured excitation functions, which allow optimisation of production yield of one radionuclide, minimising at the same time the yield of the others.
37 citations
01 Jan 1991-International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes
TL;DR: In this article, the authors have carried out a test production of 95m Tc using a thick 95 Mo-enriched target, and compared the reaction performance in terms of the production yield and the amount of contaminants.
28 citations
01 Dec 2002-Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms
TL;DR: In this paper, a stacked foil activation technique was used on natural niobium targets up to 43 MeV to investigate alpha particle induced nuclear reactions with the stacked foil activations.
Abstract: Alpha particle induced nuclear reactions were investigated with the stacked foil activation technique on natural niobium targets up to 43 MeV. Excitation functions were measured for the production of 96mgTc, 95mTc, 95gTc, 94gTc, 95mgNb and 92mNb. Cumulative cross-sections, thick target yields and activation functions were deduced and compared with available literature data. Applications of the excitation functions in the field of thin layer activation techniques and beam monitoring are also discussed.
28 citations
01 Jan 1985
TL;DR: In this article, the discovery of neutron-induced fission of uranium nuclei in the experiments performed by Hahn and Strassmann has signified an observation of nuclear transmutations of a radically new type, the processes of large-scale rearrangement of finite amounts of nuclear matter.
Abstract: The discovery of neutron-induced fission of uranium nuclei in the experiments performed by Hahn and Strassmann (Ha 39, Me 39) has signified an observation of nuclear transmutations of a radically new type—the processes of large-scale rearrangement of finite amounts of nuclear matter. As a matter of fact, the fission is a result of an irreversible deformation, that grows in time, in the course of which an original, nearly spherical heavy nucleus undergoes drastic changes in its topology and is transformed into two fragments of comparable, yet generally unequal, mass. The time evolution of a fissioning system is accompanied by multiple redistribution of available energy between various degrees of freedom, and culminates in the release of a vast amount of energy in the form of kinetic energy of the fission fragments and energy (mass) of accompanying radiation, i.e., prompt neutrons and γ rays. To initiate such radical rearrangement, an extremely weak external perturbation proved to suffice—the capture of a slow neutron causing only tiny changes in the total number of nucleons as well as in the total energy of the original nucleus.
27 citations
TL;DR: In this paper, two heavy-ion-induced production routes of {sup 93,94,95,96}Tc radionuclides through {sup 7}Li+{sup nat}Zr and {sup 9}Be+{Sup nat}Y reactions were lightened and cross-sectional information in the projectile energy ranges 37-45 MeV and 30-48 MeV, respectively.
Abstract: Proton-rich Tc radionuclides have been identified as potential candidates for specific clinical and biological applications in the last decade. So far, these radionuclides have been produced either by proton-induced reaction on Mo targets or {alpha}-particle-induced reaction on Nb targets. This article lightens two heavy-ion-induced production routes of {sup 93,94,95,96}Tc radionuclides through {sup 7}Li+{sup nat}Zr and {sup 9}Be+{sup nat}Y reactions and provides important cross-sectional information in the projectile energy ranges 37-45 MeV and 30-48 MeV, respectively. Excitation functions of those reactions have been measured using the stacked-foil technique followed by the off-line {gamma}-spectrometric studies. Measured cross-sectional data have been interpreted comparing theoretical predictions of the two nuclear reaction model codes PACE-II and ALICE91. Experimental cross sections agreed with the theory. Measured production cross sections of {sup 94,95}Tc have been compared with those produced from the {alpha}+{sup 93}Nb reaction.
26 citations