Excitation functions for actinides produced in the interactions of sup 31 P with sup 248 Cm

Journal Article · Fri Nov 01 00:00:00 EST 1991 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.44.1850· OSTI ID:5128979

Leyba, J D; Henderson, R A; Hall, H L; Czerwinski, K R; Kadkhodayan, B A; Kreek, S A; Brady, E K; Gregorich, K E; Lee, D M; Nurmia, M J; Hoffman, D C ^[1]

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1. Department of Chemistry, University of California, Berkeley, California (USA) Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California (USA)

Excitation functions have been measured for the production of various isotopes of Bk, Cf, Es, and Fm from the interactions of 174- and 239-MeV {sup 31}P projectiles with {sup 248}Cm. The isotopic distributions were symmetric and displayed full widths at half maximum of 2.5, 2.5, and 2.25 mass units for Bk, Cf, and Fm, respectively. The maxima of the isotopic distributions occur for those reaction channels which involve the exchange of the fewest number of nucleons between the target and projectile for which the calculated excitation energy is a positive quantity. The maxima of the excitation functions occur at those projectile energies which are consistent with the calculated reaction barriers based upon a binary reaction mechanism. The effects of the odd proton in the {sup 31}P projectile on the final isotopic distributions are discussed.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5128979
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 44:5; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BERKELIUM ISOTOPES
ISOTOPE PRODUCTION
CALIFORNIUM ISOTOPES
CURIUM 248 TARGET
PHOSPHORUS 31 REACTIONS
EINSTEINIUM ISOTOPES
FERMIUM ISOTOPES
TRANSFER REACTIONS
EXCITATION FUNCTIONS
EXPERIMENTAL DATA
MEV RANGE 100-1000
ACTINIDE ISOTOPES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DIRECT REACTIONS
ENERGY RANGE
FUNCTIONS
HEAVY ION REACTIONS
INFORMATION
ISOTOPES
MEV RANGE
NUCLEAR REACTIONS
NUMERICAL DATA
TARGETS
652020* - Nuclear Properties & Reactions
A=220 & above
Experimental