NEUTRON ENERGY SPECTRA FROM NUCLEI EXCITED BY $mu$$sup -$-MESON CAPTURE (thesis)

Technical Report · Wed Jun 12 04:00:00 EDT 1963

OSTI ID:4626837

Hagge, D E

The neutron energy spectra from nuclear capture of mu mesons in Al, Ca, Fe, Ag, I, Au, and Pb were measured. Nuclear temperatures were deduced from the spectra according to the Weisskopf evaporation theory. Results were compared to other experimental measurements and consistency with compound nuclear theory was discussed. The direct neutron emission spectrum was calculated by using a degenerate Fermi gas model and momentum distributions of a Gaussian type. The neutron detector was a liquid scintillation counter in conjunction with a pulseshape discrimination circuit used for gamma -ray rejection. The recoil- proton pulse-height spectra were unfolded by a computer code to obtain the neutron energy spectra. Measurements of neutrons from deuterium-tritium and Be-- Pu sources indicate good reproduction of spectra if single collisions with hydrogen are assumed. 47 references. (auth)

• Research Organization: California. Univ., Berkeley. Lawrence Radiation Lab.
• DOE Contract Number: W-7405-ENG-48
• NSA Number: NSA-17-039981
• OSTI ID: 4626837
• Report Number(s): UCRL-10516
• Country of Publication: United States
• Language: English

Related Subjects

ALUMINUM
BERYLLIUM
BIBLIOGRAPHY
CALCIUM
CAPTURE
COLLISIONS
COMPOUND NUCLEI
COMPUTERS
DEUTERIUM
DISTRIBUTION
EMISSION
ENERGY
EXCITATION
FERMI GAS
FERMI GAS MODEL
GAMMA RADIATION
GOLD
HYDROGEN
IODINE
IRON
LEAD
LIQUIDS
MEASURED VALUES
MOMENTUM
MUONS
NEUTRONS
NUCLEAR MODELS
NUCLEI
PHYSICS
PLUTONIUM
PROGRAMMING
PROTONS
PULSE ANALYZERS
RADIATION SOURCES
RECOILS
SCINTILLATION COUNTERS
SILVER
SPECTRA
STATISTICS
TEMPERATURE
TRITIUM