TY - RPRT
TI - The ({sup 3}He, {sup 7}Be) reaction on light and medium mass nuclei
AB - ({sup 3}He, {sup 7}Be) reaction have been measured and re-analysed on some A = 4n target nuclei between {sup 12}C and {sup 90}Zr. An exact finite-range DWBA calculations, with spin-orbit term in the optical potentials, have been carried out assuming a single-step alpha-cluster transfer. The question of the observed characteristic difference between two {sup 7}Be-states has been discussed in some detail. It is apparent that, despite the deficiencies in the details of the quality of the description to the angular distribution, the spin-orbit term represents the major reason for the characteristic difference between the two {sup 7}Be-states. Both absolute and relative alpha-spectroscopic factors are deduced. It is concluded that staying in the same potential family, variations of S{sub {alpha}} between {sup 12}C and {sup 40}Ca are but moderate with possible existence for local variations, S{sub {alpha}} being lower in the middle of the sd shell and higher for {sup 40}Ca. At relatively higher beam energy, i.e., at 70 MeV in the present case and with increasing mass number, S{sub {alpha}}-values, in general decrease, implying a decrease in surface alpha-clustering for heavier nuclei. (author). 30 refs, 11 figs, 3 tabs.
AU - Rahman, M A [International Centre for Theoretical Physics, Trieste (Italy)]
AU - Lezoch, P
AU - Trost, H J
AU - Strohbusch, U [Hamburg Univ. (Germany, F.R.). 1. Inst. fuer Experimentalphysik]
KW - 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
KW - CALCIUM 40 TARGET
KW - HELIUM 3 REACTIONS
KW - CARBON 12 TARGET
KW - MAGNESIUM 24 TARGET
KW - NICKEL 58 TARGET
KW - NICKEL 60 TARGET
KW - OXYGEN 16 TARGET
KW - ZIRCONIUM 90 TARGET
KW - ANGULAR DISTRIBUTION
KW - ARGON 36
KW - BERYLLIUM 7
KW - BERYLLIUM 8
KW - CARBON 12
KW - DWBA
KW - EXPERIMENTAL DATA
KW - IRON 54
KW - IRON 56
KW - MEV RANGE 10-100
KW - NEON 20
KW - OPTICAL MODELS
KW - SPECTROSCOPIC FACTORS
KW - STRONTIUM 86
KW - THEORETICAL DATA
KW - 663520
KW - 663530
KW - 663540
KW - 663550
KW - 663560
KW - A = 6-19
KW - A = 20-38
KW - A = 39-58
KW - A = 59-89
KW - A = 90-149
DO -
UR -
PB -
CY - IAEA
PY - 1991
DA - 1991-06-01
LA - English
J2 -
C1 - International Centre for Theoretical Physics (ICTP), Trieste (Italy)
C2 -
ER -