SCATTERING OF HIGH-ENERGY NEUTRONS BY He$sup 4$
Journal Article
·
· Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
The scattering of neutrons in He/sup 4/ was investigated for neutrons with energies of from 16 to 23.4 Mev with a helium-filled ionization chamber. A pronounced resonance was found at a neutron energy of 22.15 plus or minus 0.12 Mev. This resonance corresponds to an excitation energy in He/sup 5/ of 16.72 plus or minus 0.10 Mev which is the same excitation energy as that obtained for the maximum in the T(d,n)He/sup 4/ cross section. The neutron scattering experiments indicate that the level in He/sup 5/ has a width of about 100 kev which is much narrower than the ground state of He/sup 5/. This state in He/sup 5/ probably has angular momentum and parity of 3/2 /sup +/ and is made up of two neutrons and a proton in ihe S shell and one proton and one neutron in the P shell. Such a configuration would explain the large deuteron reduced width of the T(d,n)He/sup 4/ reaction and the small neutron width. (auth)
- Research Organization:
- Rice Inst., Houston, Tex.
- NSA Number:
- NSA-14-000963
- OSTI ID:
- 4196776
- 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- Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 115; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
ANGULAR MOMENTUM-- CONFIGURATION-- ENERGY-- ENERGY LEVELS-- ENERGY RANGE-- EXCITATION-- HELIUM 4-- HELIUM 5-- LEVEL WIDTHS-- LIFETIME-- MOMENTUM-- NEUTRONS-- NUCLEAR MODELS-- PARITY-- PROTONS-- RESONANCE-- SCATTERING-- WIDTH
ANGULAR MOMENTUM-- DEUTERON BEAMS-- ENERGY-- ENERGY LEVELS-- ENERGY RANGE-- EXCITATION-- HELIUM 4-- HELIUM 5-- LEVEL WIDTHS-- LIFETIME-- MOMENTUM-- NEUTRONS-- NUCLEAR REACTIONS-- PARITY-- RESONANCE-- SCATTERING-- TRITIUM-- WIDTH
ANGULAR MOMENTUM-- ENERGY-- ENERGY LEVELS-- ENERGY RANGE-- EXCITATION-- HELIUM-- HELIUM 4-- HELIUM 5-- IONIZATION CHAMBERS-- LEVEL WIDTHS-- LIFETIME-- MOMENTUM-- NEUTRONS-- PARITY-- RESONANCE--
PHYSICS
ANGULAR MOMENTUM-- DEUTERON BEAMS-- ENERGY-- ENERGY LEVELS-- ENERGY RANGE-- EXCITATION-- HELIUM 4-- HELIUM 5-- LEVEL WIDTHS-- LIFETIME-- MOMENTUM-- NEUTRONS-- NUCLEAR REACTIONS-- PARITY-- RESONANCE-- SCATTERING-- TRITIUM-- WIDTH
ANGULAR MOMENTUM-- ENERGY-- ENERGY LEVELS-- ENERGY RANGE-- EXCITATION-- HELIUM-- HELIUM 4-- HELIUM 5-- IONIZATION CHAMBERS-- LEVEL WIDTHS-- LIFETIME-- MOMENTUM-- NEUTRONS-- PARITY-- RESONANCE--
PHYSICS