TOTAL NEUTRON CROSS SECTION OF XENON AND KRYPTON

Journal Article · Tue Dec 15 04:00:00 EST 1959 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.116.1516· OSTI ID:4185410

Mann, D P; Watson, W W; Chrien, R E; Zimmerman, R L; Schwartz, R B

By the thermal diffusion method, using 12 meters of hot-wire columns, concentrations of the xenon isotopes In good quantity (about 5700 Xe/sup 129/ In the light fraction and 27% Xe/sup 136/ in the heavy one) were produced without recycling. A fair-sized sample of "light" krypton, analyzing better than 50% Kr/ sup 80/, was available from earlier thermal diffusion separation with recycling by Blais and Watson. These samples together with the normal gases were concentrated to thicknesses of about 3.3 g/cmin special gas target holders for use with the Brookhaven fast chopper. For krypton, neutron widths and isotopic identifications were determined for the following levels: 27.9 ev in Kr/sup 83/, 39.8 ev In Kr/sup 82/, 106 ev in Kr/sup 80, 233 ev in Kr/sup 83/ 519 ev in Kr, 580 ev in Kr, and 640 ev in either Kr/sup 78/ or Kr/sup 80/. Total widths and radiation widths were obtained for the 27.9- and 106-ev levels by thick-thin area analysis. For xenon, new resonances are observed at 5.2 ev In Xe/sup 124/, 9.5 ev in Xe/sup 129/, 14.1, 46.0, and 76.0 ev all in Xe/sup 131/, 92.0 ev in Xe/sup 129/, and 126 ev to be assigned to either the 128, 129, or 130 isotope. (auth)

• Research Organization: Yale Univ., New Haven; Brookhaven National Lab., Upton, N.Y.
• NSA Number: NSA-14-010070
• OSTI ID: 4185410
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 116; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHOPPERS
CROSS SECTIONS
ENERGY LEVELS
GAMMA RADIATION
GASES
HEAT TREATMENTS
ISOTOPE SEPARATION
KRYPTON 78
KRYPTON 80
KRYPTON 82
KRYPTON 83
NEUTRON SPECTROMETERS
NEUTRONS
PHYSICS
PRODUCTION
QUANTITY RATIO
RESONANCE
TARGETS
THERMAL DIFFUSION
THICKNESS
TOTAL CROSS SECTIONS
WIDTH
WIRES
XENON 124
XENON 128
XENON 129
XENON 130
XENON 131
XENON 136
XENON ISOTOPES