A SCINTILLATION SPECTROMETER FOR HIGH ENERGY BETA DECAYS

Journal Article · Wed Aug 01 04:00:00 EDT 1962 · Nucl. Instr. Methods

DOI:https://doi.org/10.1016/0029-554X(62)90130-1· OSTI ID:4770510

Cramer, Jr, J G; Farmer, B J; Class, C M

A scintillation spectrometer was developed for application to beta decays having end point energies of 3 Mev or more. The spectrometer uses a large plastic scintillator on which the betas are incident from an external source. The beam of betas is restricted to a narrow cone to insure that virtually the total energy is absorbed within the scintillator. Spectra are recorded with a multi-channel pulse height analyzer. The pulse height scale was calibrated in terms of energy by means of the end points of known beta spectra and the edges of Compton recoil electron distributions from gamma rays. The relationship between pulse height and energy was found to be linear up to 13 Mev. End point energies of spectra can be assigned to an accuracy of 1 to 2% on the basis of the calibration. The response of the spectrometer to monoenergetic electrons for the energies below 3 Mev was found to be essentially Gaussian. Spectra of the beta decays from Ce/sup 144/--Pr/sup 144/, Al/sup 28/, F/sup 20/, and B/s up 12/ compared favorably with those obtained by magnetic analysis. (auth)

• Research Organization: Rice Univ., Houston, Tex.
• NSA Number: NSA-17-001764
• OSTI ID: 4770510
• Journal Information: Nucl. Instr. Methods, Journal Name: Nucl. Instr. Methods Vol. Vol: 16
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ACIDITY
ALUMINUM 28
BEAMS
BETA SPECTROMETERS
CERIUM 144
CHEMICAL REACTIONS
COMPTON EFFECT
DISTRIBUTION
DOWEX
ELECTRONS
ENERGY
FLUORINE 20
INSTRUMENTS AND INSTRUMENTATION
ION EXCHANGE
ION EXCHANGE MATERIALS
IONS
MEASURED VALUES
NEPTUNIUM COMPOUNDS
PHOSPHORS
PRASEODYMIUM
PULSE ANALYZERS
RECOILS
SCINTILLATION COUNTERS
SENSITIVITY
SPECTRA
STATISTICS
URANYL COMPOUNDS