DRIFT CONTROL IN AN ANALYTICAL GAMMA RAY SPECTROMETER
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)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-17-032466
- Assignee:
- U.S. Atomic Energy Commission
- Patent Number(s):
- US 3101409
- OSTI ID:
- 4670613
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ATOMIC MODELS
ATOMS
CIRCUITS
COMPUTERS
CONTROL
CROSS SECTIONS
DIGITAL SYSTEMS
EFFICIENCY
ELECTRIC CHARGES
ELECTRONS
ENERGY
ENERGY LEVELS
EQUATIONS
EXCITATION
GAMMA SPECTROMETERS
INSTRUMENTS AND INSTRUMENTATION
INTERACTIONS
IONS
MASSEY CRITERION
OSCILLATIONS
PULSE ANALYZERS
PULSE GENERATORS
PULSES
QUANTUM MECHANICS
RESONANCE
STABILITY
TRANSDUCERS