NEW ISOTOPES OF COBALT ACTIVATION CROSS-SECTIONS OF NICKEL, COBALT, AND ZINC FOR 14.8 Mev NEUTRONS

Journal Article · Mon Feb 01 04:00:00 EST 1960 · Nuclear Phys.

DOI:https://doi.org/10.1016/0029-5582(60)90310-2· OSTI ID:4174198

Preiss, I L; Fink, R W

Absolute neutron activation cross-sections at 14.8 Mev were measured for the five stable nickel isotopes, for cobalt, and for zinc, based on comparison with the Cu/sup 63/(n,2n)Cu/sup 62/ reaction (556 mb), the Cu/sup 65/(n,2n)Cu/sup 64/ cross-section (1000 mb), and the Al/sup 27/(n, alpha )Na/sup 24/ reaction (115 mb). During the course of this investigation, three new cobalt activities have been identified as Co/sup 63/, 1.40 plus or minus 0.05 h, and Co/sup 64/ isomers: Co/sup 64m/, 2.0 plus or minus 0.2 min, and Co/sup 65g/, 7.8 plus or minus 0.2 min. The reactions studied, measured half-lives, and activation cross- sections are listed. Comparison is made between the experimental cross-sections and the continuum model of the compound nucleus described by Blatt and Weisskopf. A discussion is presented concerning the possible reasons for the deviation of the experimental values from those calculated from theoretical considerations. (auth)

• Research Organization: Univ. of Arkansas, Fayetteville
• NSA Number: NSA-14-013241
• OSTI ID: 4174198
• Journal Information: Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 15
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACTIVATION
ALPHA PARTICLES
ALUMINUM 27
COBALT
COBALT 63
COBALT 64
COMPOUND NUCLEI
COPPER 62
COPPER 63
COPPER 64
COPPER 65
CROSS SECTIONS
DIPOLES
ELECTRIC MOMENTS
ENERGY
ENERGY RANGE
EXCITATION
HALF-LIFE
ISOMERS
ISOTOPES
MEASURED VALUES
NEUTRONS
NICKEL
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
PHYSICS
SODIUM 24
STANDARDS
TABLES
ZINC