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ENERGY LEVELS IN Sm$sup 148$ AND Sm$sup 15$$sup 0$

Journal Article · · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
;
Energy levels in Sm/sup 148/ and Sm/sup 150/ were observed via the reactions Sm/sup 147/ (d,p)Sm/sup 148/, Sm/sup 149/(d,p)Sm/sup 150/, Sm/sup 148( p,p')Sm/sup 148/ and Sm/sup 150/(p,p')Sm/sup 150/ at 12-Mev bombarding energy. Reaction products were analyzed in a 0.1% energy resolution magnetic spectrograph using emulsion techniques. Levels be1ow 1.9-Mev excitation are found to have much smaller (d,p) cross sections than those above this energy. Many previously unknown levels above 1-Mev excitation were found in both these nuclei. The observed levels are compared with previous studies of these nuclei. Several of the positive parity levels in Sm/sup 148/ can be fitted to an asymmetric rotor- vibrator spectrum. The excited states in Sm/sup 150/ can be approximated, but not fitted exactly, with this model. The observed low-lying states in these nuclei are discussed in terms of expected level structure for collective models. The ground-state Q values for the reactions Sm/sup 147/ (d,p)Sm/sup 148/ and Sm/ sup 149/(d,p)Sm/sup 150/ are determined to b e 5920 plus or minus 10 and 5764 plus or minus 4 kev, respectively. (auth)
Research Organization:
Florida State Univ., Tallahassee
NSA Number:
NSA-18-006236
OSTI ID:
4117459
Journal Information:
Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 133; ISSN PHRVA
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

COLLECTIVE MODEL
CROSS SECTIONS
DEUTERON BEAMS
ENERGY
ENERGY LEVELS
ENERGY RANGE
EXCITATION
MAGNETIC FIELDS
MEV RANGE
NUCLEAR EMULSIONS
NUCLEAR MODELS
OSCILLATIONS
PARITY
PHYSICS
PROTONS
Q-VALUE
RESOLUTION
ROTATION
SAMARIUM 147
SAMARIUM 149
SPECTRA
SPECTROMETERS