Rejection of Gamma Background Radiation Pulses in Hornyak Buttons

Journal Article · Fri Jun 01 04:00:00 EDT 1962 · IRE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/TNS2.1962.4316013· OSTI ID:4820501

De Volpi, A.; Porges, K. G.

The nature of pulses resulting from alpha, beta, gamma, and neutron irradiation of Hornyak buttons was examined under various conditions, including the use of light filters and both fast and slow electronics. Tentative conclusions about the mechanism of their origin are reached. Pulses from Compton recoils originate in the matrix and light transmitting media of the Hornyak button and phototube. Such pulses are of short duration, being similar in shape to photomultiplier noise pulses, in contrast to the 70nanosecond decay of the fastest component of ZnS(Ag) fluorescence. A relatively simple, passive anticoincidence network is described which allows fast cancellation of the gamma- induced short pulses while passing the zinc sulfide scintillation with adequate efficiency. Rise time of the pulses emerging from the background suppression circuit is about 7 nsec. This network, in conjunction with a distributed amplifier, tunnel diode discriminator, and other fast electronic equipment is used to select isssion neutrons in coincidence with fission events.

• Research Organization: Argonne National Lab., Ill.
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-023916
• OSTI ID: 4820501
• Report Number(s): UAC-6092
• Journal Information: IRE Transactions on Nuclear Science, Journal Name: IRE Transactions on Nuclear Science Journal Issue: 3 Vol. 9; ISSN 0096-2015
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALPHA BEAMS
AMPLIFIERS
BACKGROUND
BEAMS
BETA PARTICLES
COINCIDENCE METHODS
COMPTON EFFECT
ELECTRONICS
ENGINEERING AND EQUIPMENT
FISSION
FLUORESCENCE
GAMMA RADIATION
NEUTRON BEAMS
PHOTOELECTRIC CELLS
PHOTOMULTIPLIERS
PULSES
SEMICONDUCTORS
TUNNEL EFFECT
ZINC SULFIDES