Analysis of fissionable material using delayed gamma rays from photofission
The energetic gamma-ray spectra from the fission products of photofission have been investigated to determine whether photofission can identify heavily shielded fissionable material. Target samples of natural thorium, 93% enriched /sup 235/U, natural uranium, and 93% enriched /sup 239/Pu were irradiated with bremsstrahlung gamma rays produced by 10-MeV electrons from a small linear accelerator. The gamma-ray spectra for each of the four isotopes studied reveals a distinctive intensity distribution. For example, the intensity ratio of the pair of gamma rays at 1436 keV (/sup 138/Cs) and 1428 keV (/sup 94/Sr) is 1.9 for /sup 235/U, 2.4 for /sup 238/U, 1.7 for /sup 232/Th and 1.4 for /sup 239/Pu. 6 refs., 2 figs., 1 tab.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5142032
- Report Number(s):
- LA-UR-86-3363; CONF-861114-2; ON: DE87000167
- Resource Relation:
- Journal Volume: 24-25; Conference: 9. international conference on application of accelerators in research and industry, Denton, TX, USA, 10 Nov 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FISSION PRODUCTS
GAMMA SPECTRA
PLUTONIUM 239
PHOTOFISSION
THORIUM
URANIUM
URANIUM 235
CESIUM 138
EXPERIMENTAL DATA
IODINE 136
KRYPTON 89
RUBIDIUM 89
STRONTIUM 94
YTTRIUM 97
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM ISOTOPES
DATA
ELEMENTS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FISSION
HEAVY NUCLEI
INFORMATION
INTERMEDIATE MASS NUCLEI
IODINE ISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KRYPTON ISOTOPES
MATERIALS
METALS
MINUTES LIVING RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PHOTONUCLEAR REACTIONS
PLUTONIUM ISOTOPES
RADIOACTIVE MATERIALS
RADIOISOTOPES
RUBIDIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
SPECTRA
STRONTIUM ISOTOPES
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
YTTRIUM ISOTOPES
652026* - Nuclear Properties & Reactions
A=220 & above
Experimental- Spontaneous & Induced Fission- (-1987)