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Core-excited states of $sup 54$Fe from the $sup 56$Fe(p,t)$sup 54$Fe reaction at 52 MeV

Journal Article · · Nucl. Phys., A, v. A220, no. 3, pp. 461-476
OSTI ID:4332795
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The (p,t) reaction on /sup 56/Fe was studied at a bombarding energy of 51.9 MeV using a broad-range magnetic spectrometer. States of /sup 54/Fe were identified up to an excitation energy of 7.6 MeV. Differential cross sections were obtained for 16 triton groups From the shapes of angular distributions J/sup pi / = 0/sup +/, 2/sup +/ were assigned for 11 levels. The 0/sup +/ state 2.56 MeV was strongly excited ( approximately 27% of the ground state transition). Comparison with the DWBA calculation was made based on the shell-model calculation on /sup 54/Fe with (f/sub 7/2/)/sup -(n+2)/ (p/sub 3/2/,f/sub 5/2/,p/ su b 1/2/)/sup n/ configurations for the low-lying even-parity states. The agreement with the experimental results was satisfactory for most of the states with appreciable (p,t) strengths which were interpreted as coreexcited states mostly with 3h-1p and 4h-2p configurations. An empirical normalization constant of 12.5 was derived from the L = 0 ground state transition. (auth)
Research Organization:
Tokyo Univ.
NSA Number:
NSA-29-028244
OSTI ID:
4332795
Journal Information:
Nucl. Phys., A, v. A220, no. 3, pp. 461-476, Journal Name: Nucl. Phys., A, v. A220, no. 3, pp. 461-476; ISSN NUPAB
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

*IRON 54-- ENERGY LEVELS
*IRON 56-- PROTON REACTIONS
*PROTON REACTIONS-- PICKUP REACTIONS
ANGULAR DISTRIBUTION
DIFFERENTIAL CROSS SECTIONS
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ENERGY-LEVEL TRANSITIONS
GROUND STATES
MEV RANGE 10-100
N68531* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
39 <= A <= 58--Energy Levels & Transitions
N68551 --Physics (Nuclear
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39 <= A <= 58--Nuclear Reactions & Scattering
NUCLEAR CORES
PARITY
SHELL MODELS
SPIN
TRITONS
TWO-NUCLEON TRANSFER REACTIONS