TOTAL NEUTRON CROSS SECTIONS OF HELIUM, NEON, ARGON, KRYPTON, AND XENON

Journal Article · Sun May 01 00:00:00 EDT 1960 · Physical Review (U.S.) Superseded in part by Phys.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.118.683· OSTI ID:4164761

Vaughn, F J; Imhof, W L; Johnson, R G; Walt, M

The total neutron cross sections of the noble gases helium, neon, argon, krypton, and xenon were measured for neutron energies from 120 kev to 6.2 Mev and from 12.1 Mev to 19.8 Mev by a transmission experiment. The neutrons were produced using the Li/sup 7/(p,n)Be/sup 7/, the T(p,n)He/sup 3/, the D(d,n)He/sup 3/, and the T(d,n)He/sup 4/ reactions in the appropriate energy intervals. A Van de Graaff accelerator was the source of the protons or deuterons. In genenal, the results obtained agree with previous work where such work exists. A previously unobserved S-wave scattering resonance was found in neon at about 500 kev, indicating the presence of an excited state in Ne/sup 21/ with J = 1/2 and even parity. The results for argon, krypton, and xenon exhibit general agreement with the cross sections of neighboring elements, as would be expected from the previously observed smooth variation of the sigma (A,E) surface. (auth)

• Research Organization: Lockheed Missiles and Space Research Lab., Palo Alto, Calif.
• NSA Number: NSA-14-016297
• OSTI ID: 4164761
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 118; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ARGON-- BERYLLIUM 7-- CROSS SECTIONS-- ENERGY LEVELS-- ENERGY RANGE-- EXCITATION-- FAST NEUTRONS-- HELIUM-- KEV RANGE-- KRYPTON-- LITHIUM 7-- MEASURED VALUES-- MEV RANGE-- NEON-- NEON 21-- NEUTRON BEAMS-- NEUTRON SOURCES-- NEUTRONS-- NUCLEAR REACTIONS-- PARITY-- PROTON BEAMS-- RESONANCE-- SPIN-- TARGETS-- VAN DE GRAAFF ACCELERATORS-- XENON
ARGON-- CROSS SECTIONS-- DEUTERIUM-- DEUTERON BEAMS-- ENERGY LEVELS-- ENERGY RANGE-- EXCITATION-- FAST NEUTRONS-- HELIUM-- HELIUM 3-- KEV RANGE-- KRYPTON-- MEASURED VALUES-- MEV RANGE-- NEON-- NEON 21-- NEUTRON BEAMS-- NEUTRON SOURCES-- NEUTRONS-- NUCLEAR REACTIONS-- PARITY-- RESONANCE-- SPIN-- TARGETS-- V
PHYSICS