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Title: DRIFT CONTROL IN AN ANALYTICAL GAMMA RAY SPECTROMETER

Abstract

A device for automatically and continuously controlling the over-all drift of a multi-channel analyzer so as to permit the accurate processing of spectrometric analytical data by a digital computer is described. Two sources of reference pulses, one of which is stored in the lower channels and the other being stored in the higher channels of a 256 channel analyzer, are provided. The reference pulses are processed in the same manner as the data pulses. The channels that should contain the reference pulses and the adjacent channels above and below those channels are monitored by comparison circuits such that any drift, upward or downward, of the reference pulses is detected to effect a change in high voltage supply in response to a drift in the upper channel, and to effect a change in the lower discriminator level of the analog to digital converter of the analyzer in response to a drift in the lower channel, thereby maintaining the pulses in the proper channels. (AEC)

Inventors:
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4670613
Patent Number(s):
3101409
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-17-032466
NSA Number:
NSA-17-032466
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-63
Country of Publication:
United States
Language:
English
Subject:
INSTRUMENTS AND INSTRUMENTATION; ANALOG SYSTEMS; ATOMIC MODELS; ATOMS; CIRCUITS; COMPUTERS; CONTROL; CROSS SECTIONS; DIGITAL SYSTEMS; EFFICIENCY; ELECTRIC CHARGES; ELECTRONS; ENERGY; ENERGY LEVELS; EQUATIONS; EXCITATION; GAMMA SPECTROMETERS; INTERACTIONS; IONS; MASSEY CRITERION; OSCILLATIONS; PULSE ANALYZERS; PULSE GENERATORS; PULSES; QUANTUM MECHANICS; RESONANCE; STABILITY; TRANSDUCERS

Citation Formats

Fite, L.E. DRIFT CONTROL IN AN ANALYTICAL GAMMA RAY SPECTROMETER. United States: N. p., 1963. Web.
Fite, L.E. DRIFT CONTROL IN AN ANALYTICAL GAMMA RAY SPECTROMETER. United States.
Fite, L.E. Tue . "DRIFT CONTROL IN AN ANALYTICAL GAMMA RAY SPECTROMETER". United States.
@article{osti_4670613,
title = {DRIFT CONTROL IN AN ANALYTICAL GAMMA RAY SPECTROMETER},
author = {Fite, L.E.},
abstractNote = {A device for automatically and continuously controlling the over-all drift of a multi-channel analyzer so as to permit the accurate processing of spectrometric analytical data by a digital computer is described. Two sources of reference pulses, one of which is stored in the lower channels and the other being stored in the higher channels of a 256 channel analyzer, are provided. The reference pulses are processed in the same manner as the data pulses. The channels that should contain the reference pulses and the adjacent channels above and below those channels are monitored by comparison circuits such that any drift, upward or downward, of the reference pulses is detected to effect a change in high voltage supply in response to a drift in the upper channel, and to effect a change in the lower discriminator level of the analog to digital converter of the analyzer in response to a drift in the lower channel, thereby maintaining the pulses in the proper channels. (AEC)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1963},
month = {8}
}