Spin-isospin strength distributions for [ital fp] shell nuclei: Results for the [sup 55]Mn([ital n],[ital p]), [sup 56]Fe([ital n],[ital p]), and [sup 58]Ni([ital n],[ital p]) reactions at 198 MeV

Journal Article · Wed Jun 01 00:00:00 EDT 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.49.3128· OSTI ID:7050146

El-Kateb, S; Jackson, K P; Alford, W P; Abegg, R; Azuma, R E; Brown, B A; Celler, A; Frekers, D; Haeusser, O; Helmer, R; Henderson, R S; Hicks, K H; Jeppesen, R; King, J D; Shute, G G; Spicer, B M; Trudel, A; Raywood, K; Vetterli, M; Yen, S ^[1]

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1. King Fahd University of Petroleum and Minerals, Dhahran (Saudi Arabia) TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (Canada) University of Western Ontario, London, Ontario, N6A 3K7 (Canada) University of Toronto, Toronto, Ontario, N6A 3K7 (Canada) Michigan State University, East Lansing, Michigan 48824 (United States) Simon Fraser University, Burnaby, British Columbia, V5A 1S6 (Canada) University of Melbourne, Parkville, Victoria 3052 (Australia)

Cross sections for the reactions [sup 55]Mn([ital n],[ital p]), [sup 56]Fe([ital n],[ital p]), and [sup 58]Ni([ital n],[ital p]) have been measured at an incident energy of 198 MeV, with protons observed over a range of energies corresponding to excitations of up to about 35 meV in the residual nuclei [sup 55]Cr, [sup 56]Mn, and [sup 58]Co, respectively. Measurements were carried out at center-of-mass angles between 1.6[degree] and 19.9[degree]. A multipole analysis of the results yielded the distribution of Gamow-Teller (GT) and spin-dipole strength for each target. The total GT strength below an excitation energy of 8.5 MeV was 1.7 units for [sup 55]Mn, 2.8 units for [sup 56]Fe, and 3.8 units for [sup 58]Ni. Shell model calculations of the GT strength distribution, carried out in a restricted vector space, show fair to good agreement with the data up to an excitation energy of 8.5 MeV, but overestimate the total strength by a factor of between 3 and 4.

• OSTI ID: 7050146
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 49:6; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
IRON 56 TARGET
NEUTRON REACTIONS
MANGANESE 55 TARGET
CROSS SECTIONS
NICKEL 58 TARGET
CHARGE-EXCHANGE REACTIONS
GAMOW-TELLER RULES
ISOSPIN
MEV RANGE 100-1000
PROTONS
SPIN
STRENGTH FUNCTIONS
ANGULAR MOMENTUM
BARYON REACTIONS
BARYONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FUNCTIONS
HADRON REACTIONS
HADRONS
MEV RANGE
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEONS
PARTICLE PROPERTIES
TARGETS
663430* - Nucleon-Induced Reactions & Scattering- (1992-)
663540 - Nuclear Mass Ranges- A=39-58- (1992-)