Identification of $sup 236$Th
The radionuclide /sup 236/Th has bsen produced by the /sup 238/U(p, 3p)/ sup 23 6/Th reaction with 100-MeV protons. The cross section for the reaction is 5/sup -6//sub -3/ mu b. Radiochemical separations were performed to isolate the thorium fraction from uranium, neptunium, protactinium, and fission products. The /sup 236/Th half-life was determined to be 37.5 plus or minus 1.5 min by measuring the growth and decay of its daughter, 9.1-min /sup 236/Pa. Electromagnetic isotope separation was also performed on thc thorium samples; and, although the resultant sources were very weak, evidence for several gamma transitions in the /sup 236/Th decay was obtained. A partial decay scheme is proposed for /sup 236/Th that includes excited states in /sup 236/Pa at 2.1, 112.7, 132, and approx equal 230 keV. The decay of /sup 236/Th is compared with the decay of /sup 234/Th, with emphasis on the b 0-.1/- bands in /sup 234/Pa and /sup 236/Pa. (auth)
- Research Organization:
- Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico 87544
- NSA Number:
- NSA-29-023025
- OSTI ID:
- 4314701
- Journal Information:
- Phys. Rev., C, v. 8, no. 6, pp. 2364-2371, Journal Name: Phys. Rev., C, v. 8, no. 6, pp. 2364-2371; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
THE RADIOCHEMICAL SEPARATIONS OF U-Th, Th-RARE EARTHS ELEMENTS AND Th-Pa-U ON SMALL ION-EXCHANGE COLUMNS
Nuclear Data Sheets for A = 236
Related Subjects
BRANCHING RATIO-- ENERGY LEVELS-- ENERGY-LEVEL TRANSITIONS-- INTERNAL CONVERSION-- MULTIPOLARITY-- PARITY-- PROTACTINIUM 236-- SPIN
CROSS SECTIONS-- KNOCK-OUT REACTIONS-- MEV RANGE 10- 100-- NEUTRONS-- PROTON REACTIONS-- PROTONS-- THORIUM ISOTOPES-- THORIUM 236-- URANIUM 238
N69121* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
A >= 220--Radioactive Decay
N69131 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
A >= 220--Energy Levels & Transitions
N69151 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
A >= 220--Nuclear Reactions & Scattering