ASTR FAST NEUTRON SPECTRA
Ilford E-2 emulsions were used to measure the fast neutron spectra of the ASTR for two shield configurations, for minimum side water shielding and maximum side water shielding. During the exposures from 105 deg to forward centerline the reactor was mounted in the an energy distribution similar to a flssion spectrum. The calculation shows that after several elastic colln-sions the neutron still has an appreciable probability to undergo a reaction, in spite of the energy degradation in the spectrum due to each collision. This degradation was calculated, taking into account the anisotropy of the collisions. The gain of the reactivity in a reactor was obtained after correcting these probabilities for please delete the above part of abstract starting with (an energy distrubtuion similar to a fission spectrum.) Nuclear Test Aircraft. The measured spectra are compared with those calculated by use of the moments method. (W.D.M.)
- Research Organization:
- Convair, Fort Worth, Tex.
- NSA Number:
- NSA-13-009365
- OSTI ID:
- 4276461
- Report Number(s):
- FZM-1047B
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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ASTR FAST-NEUTRON AND GAMMA-RAY SPECTRAL MEASUREMENTS
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CALIBRATION OF THE ASTR
Technical Report
·
Sat Jan 14 23:00:00 EST 1961
·
OSTI ID:4069474
The Influence of the (n,2n) and (n,/cap alpha/) Reactions of Beryllium on the Neutron Balance in a BeO or Be Moderated Reactor and Its Consequences on the Long Term Reactivity Changes; INFLUENCE DES REACTIONS (n,2n) ET (n,*cap alpha/) DU BERYLLIUM SUR LE BILAN NEUTRONIQUE D'UN REACTEUR MODERE A L'OXYDE DE BERYLLIUM OU AU BERYLLIUM. CONSEQUENCES SUR L'EVOLUTION A LONG TERME De la reactivite
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Mon Mar 31 23:00:00 EST 1958
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OSTI ID:4276499
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Thu Oct 31 23:00:00 EST 1957
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OSTI ID:4347121
Related Subjects
AIRCRAFT
ANGULAR DISTRIBUTION
ASTR
CONFERENCE
CONFIGURATION
DISTRIBUTION
EQUATIONS
ERRORS
FAST NEUTRONS
ILFORD EMULSIONS
MATERIALS TESTING
MEASURED VALUES
MOCKUP
NEUTRON DETECTION
NEUTRON FLUX
NUCLEAR EMULSIONS
NUMERICALS
POWER PLANTS
PROPULSION
REACTORS
SHIELDING
SHIELDING MATERIALS
SPECTRA
THICKNESS
WATER
ANGULAR DISTRIBUTION
ASTR
CONFERENCE
CONFIGURATION
DISTRIBUTION
EQUATIONS
ERRORS
FAST NEUTRONS
ILFORD EMULSIONS
MATERIALS TESTING
MEASURED VALUES
MOCKUP
NEUTRON DETECTION
NEUTRON FLUX
NUCLEAR EMULSIONS
NUMERICALS
POWER PLANTS
PROPULSION
REACTORS
SHIELDING
SHIELDING MATERIALS
SPECTRA
THICKNESS
WATER