RESONANCE DETECTION OF NEUTRON ENERGY GROUPS FROM THE Mn$sup 55$ (p,n) Fe$sup 55$ REACTION

Journal Article · Sat Aug 15 04:00:00 EDT 1959 · Physical Review (U.S.) Superseded in part by Phys.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.115.969· OSTI ID:4204256

Lee, Jr, L L; Mooring, F P

The excitation energics of low-lying levels m Fe/sup 55/ and the Q-value of the Mn/sup 55/(p,n)Fe/sup 55/ reaction were measured by determining the proton energies at which 257-kev neutrons are produced. The ratio of the number of neutrons scattered by a 1/2-in. thick lithium slab to the number of neutrons transmitted was measured as the energy of a proton beam strixing a thin manganese target was varied monotonically. Peaks in the ratio curve, indicating the presence of 257-kev (the energy for resonant neutron scattering from lithium) neutron groups from the reaction, occur at particular proton energies, and Q- values can readily be computed. A ground-state Q-value of (-1.011 plus or minus 0.005) Mev was measured for the Mn/sup 55/(p,n)Fe/sup 55/ reaction and states in Fe/sup 55/ were located at excitations of tions of the method are discussed. (auth)

• Research Organization: Argonne National Lab., Lemont, Ill.
• NSA Number: NSA-14-003019
• OSTI ID: 4204256
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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

Related Subjects

ENERGY-- ENERGY LEVELS-- EXCITATION-- IRON 55-- MEASURED VALUES
ENERGY-- ENERGY RANGE-- IRON 55-- MANGANESE 55-- MEASURED VALUES-- NEUTRONS-- NUCLEAR REACTIONS-- Q-VALUE
LITHIUM-- MEASURED VALUES-- NEUTRONS-- PLATES-- RESONANCE-- SCATTERING
PHYSICS