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The ({sup 3}He, {sup 7}Be) reaction on light and medium mass nuclei

Technical Report:

Abstract

({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.
Authors:
Rahman, M A; [1]  Lezoch, P; Trost, H J; Strohbusch, U [2] 
  1. International Centre for Theoretical Physics, Trieste (Italy)
  2. Hamburg Univ. (Germany, F.R.). 1. Inst. fuer Experimentalphysik
Publication Date:
Jun 01, 1991
Product Type:
Technical Report
Report Number:
IC-91/129
Reference Number:
SCA: 663520; 663530; 663540; 663550; 663560; PA: AIX-22:083054; SN: 91000609624
Resource Relation:
Other Information: PBD: Jun 1991
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CALCIUM 40 TARGET; HELIUM 3 REACTIONS; CARBON 12 TARGET; MAGNESIUM 24 TARGET; NICKEL 58 TARGET; NICKEL 60 TARGET; OXYGEN 16 TARGET; ZIRCONIUM 90 TARGET; ANGULAR DISTRIBUTION; ARGON 36; BERYLLIUM 7; BERYLLIUM 8; CARBON 12; DWBA; EXPERIMENTAL DATA; IRON 54; IRON 56; MEV RANGE 10-100; NEON 20; OPTICAL MODELS; SPECTROSCOPIC FACTORS; STRONTIUM 86; THEORETICAL DATA; 663520; 663530; 663540; 663550; 663560; A = 6-19; A = 20-38; A = 39-58; A = 59-89; A = 90-149
OSTI ID:
10106173
Research Organizations:
International Centre for Theoretical Physics (ICTP), Trieste (Italy)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ON: DE92609934; TRN: XA9129651083054
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
26 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Rahman, M A, Lezoch, P, Trost, H J, and Strohbusch, U. The ({sup 3}He, {sup 7}Be) reaction on light and medium mass nuclei. IAEA: N. p., 1991. Web.
Rahman, M A, Lezoch, P, Trost, H J, & Strohbusch, U. The ({sup 3}He, {sup 7}Be) reaction on light and medium mass nuclei. IAEA.
Rahman, M A, Lezoch, P, Trost, H J, and Strohbusch, U. 1991. "The ({sup 3}He, {sup 7}Be) reaction on light and medium mass nuclei." IAEA.
@misc{etde_10106173,
title = {The ({sup 3}He, {sup 7}Be) reaction on light and medium mass nuclei}
author = {Rahman, M A, Lezoch, P, Trost, H J, and Strohbusch, U}
abstractNote = {({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.}
place = {IAEA}
year = {1991}
month = {Jun}
}