A FAST NEUTRON SCINTILLATION SPECTROMETER (thesis)
A fast neutron scintillation spectrometer consisting of a Li/sup 6/(Eu) phosphor photomultiplier tube and associated amplification, pulse analyzing, and counting equipment was constructed. The Li/sup 6/ enrichment and thickness of the crystal is determined by a theoretical consideration of neutron-to-gamma sensitivity. Calibration with gamma-rays and neutrons determined the gamma- rayequivalent Q of the Li/sup 6/(n, alpha )H/sup 3/ reaction from which a neutron calibration curve was constructed. A Po-Be neutron spectrum corrected for Li/sup 6/ absorption cross section and gamma-ray flux is the final result. The correction for degraded neutrons scattered into the crystal from the surroundings could not be made since fast monoenergetic neutron sources were not available. Based on the experimental work performed and work done at ORNL, a cooled Li/sup 6/ I(Eu) phosphor offers promise as a laboratory tool for fast neutron spectroscopy. (auth)
- Research Organization:
- Air Force Inst. of Tech., Wright-Patterson AFB, Ohio
- NSA Number:
- NSA-13-015260
- OSTI ID:
- 4240325
- Report Number(s):
- AD-157598
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
A Double-Pulse Total-Absorption Fast Neutron Spectrometer
FAST NEUTRON SCINTILLATION SPECTROMETER
Related Subjects
ALPHA PARTICLES-- GAMMA RADIATION-- HELIUM 3-- LITHIUM 6-- NEUTRON BEAMS-- NUCLEAR REACTIONS-- SENSITIVITY-- THICKNESS
AMPLIFIERS-- ENERGY RANGE-- EUROPIUM-- FAST NEUTRONS-- LITHIUM IODIDES-- LITHIUM 6-- NEUTRON SPECTROMETERS-- PHOSPHORS-- PHOTOMULTIPLIERS-- PULSE ANALYZERS-- SCALERS
INSTRUMENTS