Determination of absolute fission cross section ratios using the method of threshold cross sections
Abstract
Fission cross section measurements for a collection of uranium and plutoninm isotopes are presertly being made at LLL by using the 100-MeV electron linear accelerator as a pulsed source for neutrons. The cross sections are measured as a function of neutron energy from 15 MeV down to thermal energy by using the time-of-flight technique. For neutron energies above 1 MeV, a new method for determining absolute fission cross section ratios is used. This method, called the method of threshold cross sections, gives absolute fission cross section ratios without the need for determing the absolute masses of flssionable material within flssion chambers. An explanation of the threshold cross section method is given, and an example is cited for the absolute ratio sigma /sub f/(238): sigma /sub f/ (235) above 1 MeV. (auth)
- Authors:
- Publication Date:
- Research Org.:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- OSTI Identifier:
- 4385976
- Report Number(s):
- UCRL-51478
- NSA Number:
- NSA-29-011542
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: Orig. Receipt Date: 30-JUN-74
- Country of Publication:
- United States
- Language:
- English
- Subject:
- N69161* -Physics (Nuclear, Experimental)-Nuclear Properties & Reactions, A >= 220-Nuclear Reactions & Scattering-Spontaneous & Induced Fission:734; *NEUTRON REACTIONS- FAST FISSION; CROSS SECTIONS; FAST NEUTRONS; MEASURING METHODS; MEV RANGE
Citation Formats
Behrens, J.W. Determination of absolute fission cross section ratios using the method of threshold cross sections. United States: N. p., 1973.
Web. doi:10.2172/4385976.
Behrens, J.W. Determination of absolute fission cross section ratios using the method of threshold cross sections. United States. doi:10.2172/4385976.
Behrens, J.W. Mon .
"Determination of absolute fission cross section ratios using the method of threshold cross sections". United States.
doi:10.2172/4385976. https://www.osti.gov/servlets/purl/4385976.
@article{osti_4385976,
title = {Determination of absolute fission cross section ratios using the method of threshold cross sections},
author = {Behrens, J.W.},
abstractNote = {Fission cross section measurements for a collection of uranium and plutoninm isotopes are presertly being made at LLL by using the 100-MeV electron linear accelerator as a pulsed source for neutrons. The cross sections are measured as a function of neutron energy from 15 MeV down to thermal energy by using the time-of-flight technique. For neutron energies above 1 MeV, a new method for determining absolute fission cross section ratios is used. This method, called the method of threshold cross sections, gives absolute fission cross section ratios without the need for determing the absolute masses of flssionable material within flssion chambers. An explanation of the threshold cross section method is given, and an example is cited for the absolute ratio sigma /sub f/(238): sigma /sub f/ (235) above 1 MeV. (auth)},
doi = {10.2172/4385976},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Nov 12 00:00:00 EST 1973},
month = {Mon Nov 12 00:00:00 EST 1973}
}
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