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

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.
Authors:
; ; ; ; ; ; ; ; ; ;  [1]
  1. (Department of Chemistry, University of California, Berkeley, California (USA) Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California (USA))
Publication Date:
OSTI Identifier:
5128979
DOE Contract Number:
AC03-76SF00098
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review, C (Nuclear Physics); (United States); Journal Volume: 44:5
Country of Publication:
United States
Language:
English
Subject:
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