Study of levels in $sup 149$Nd using the (d,t) and ($sup 3$He,$alpha$) reactions
Journal Article
·
· Can. J. Phys., v. 51, no. 4, pp. 455-464
OSTI ID:4354013
Triton spectra from the /sup 150/Nd(d,t)/sup 149/Nd reaction were measured at 15 angles using beams of 12-MeV deuterons. The /sup 150/Nd(/sup 3/ He, alpha ) /sup 149/Nd reaction was studied at four angles with 24 MeV /sup 3/He beams. In all cases the reaction products were analyzed with an Engetype magnetic spectrograph and detected with photographic emulsions. The peak widths (FWHM) were approximately 8 keV for the (d,t) studies and 25 keV for the (/sup 3/ He, alpha ) spectra. It is now evident that the highest energy triton group ascribed to the /sup 150/Nd(d,t)/sup 149/Nd reaction in previous works does not correspond to the ground state transition. According to the current interpretation the ground state transition has a Q value of -1.122 plus or minus 0.010 MeV. The (d,t) angular distributions and the ratios of (/sup 3/He, alpha ) and (d,t) cross sections at selected angles were used to determine 1 values for a number of the transitions. Three states in /sup 149/Nd at and thus have I/sup pi / = 1/2+. A strongly perturbed band consisting of a mixture of Nilsson states from the i/sub 13/2/ shell was found, with properties similar to the corresponding bands in the isotones /sup 151/Sm and /sup 153/Gd. The total observed intensity for each of the 1 values 0, 1, 2, and 6 cannot be explained by the extreme single-particle shell model but is consistent with that predicted by the Nilsson model. However, the splitting of the strength among the observed states cannot be explained by the basic Nilsson model. (auth)
- Research Organization:
- McMaster Univ., Hamilton, Ont.
- NSA Number:
- NSA-29-017221
- OSTI ID:
- 4354013
- Journal Information:
- Can. J. Phys., v. 51, no. 4, pp. 455-464, Journal Name: Can. J. Phys., v. 51, no. 4, pp. 455-464; ISSN CJPHA
- Country of Publication:
- Canada
- Language:
- English
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STUDY OF THE Sm$sup 149$(n,$alpha$)Nd$sup 146$ REACTION WITH THERMAL NEUTRONS
Journal Article
·
Wed Nov 14 23:00:00 EST 1973
· Can. J. Phys., v. 51, no. 22, pp. 2354-2368
·
OSTI ID:4343000
Nuclear reaction studies of $sup 151$Sm
Journal Article
·
Sat Sep 15 00:00:00 EDT 1973
· Can. J. Phys., v. 51, no. 18, pp. 2000-2022
·
OSTI ID:4357469
STUDY OF THE Sm$sup 149$(n,$alpha$)Nd$sup 146$ REACTION WITH THERMAL NEUTRONS
Journal Article
·
Sat Sep 01 00:00:00 EDT 1962
· Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
·
OSTI ID:4787474
Related Subjects
*NEODYMIUM 149-- ENERGY LEVELS
CROSS SECTIONS
HELIUM 3 REACTIONS-- MEV RANGE 10-100-- NEODYMIUM 150- - ONE-NUCLEON TRANSFER REACTIONS-- PICKUP REACTIONS
N68731* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
90 <= A <= 149--Energy Levels & Transitions
N68851 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
150 <= A <= 189--Nuclear Reactions & Scattering
PARITY
SPIN ANGULAR DISTRIBUTION-- DEUTERON REACTIONS-- ENERGY SPECTRA-- MEV RANGE 10-100-- NEODYMIUM 150-- PICKUP REACTIONS-- TRITONS-- TWO- NUCLEON TRANSFER REACTIONS
CROSS SECTIONS
HELIUM 3 REACTIONS-- MEV RANGE 10-100-- NEODYMIUM 150- - ONE-NUCLEON TRANSFER REACTIONS-- PICKUP REACTIONS
N68731* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
90 <= A <= 149--Energy Levels & Transitions
N68851 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
150 <= A <= 189--Nuclear Reactions & Scattering
PARITY
SPIN ANGULAR DISTRIBUTION-- DEUTERON REACTIONS-- ENERGY SPECTRA-- MEV RANGE 10-100-- NEODYMIUM 150-- PICKUP REACTIONS-- TRITONS-- TWO- NUCLEON TRANSFER REACTIONS