Level structure of $sup 173$Yb from the $sup 171$Yb(n,$gamma$) reaction
Journal Article
·
· Nucl. Phys., A, v. 252, no. 2, pp. 260-292
OSTI ID:4091690
The energy-level structure of the nucleus $sup 172$Yb has been studied using the $sup 171$Yb(n,$gamma$) reaction with both thermal and 2-keV neutrons. Gamma-ray energy and intensity measurements were made using Ge(Li) detectors. From these data, a neutron separation energy of 8020, 1 +- 0.5 keV has been determined for $sup 172$Yb. In addition, a level scheme is proposed for $sup 172$Yb. Where possible, these states have been grouped into rotational bands. A total of fourteen such rotational bands with band-head energies below 2.2 MeV are contained in the proposed level scheme. Because of the averaging feature of the 2 keV neutron-capture data, it is believed that all the positive-parity states with I = 0, 1 and 2 with energies below 2.3 MeV in $sup 172$Yb have been identified in this study. (NL)
- Research Organization:
- Aerojet Nuclear Co., Idaho Falls, Idaho (USA)); (Idaho State Univ., Pocatello (USA)
- NSA Number:
- NSA-33-019086
- OSTI ID:
- 4091690
- Journal Information:
- Nucl. Phys., A, v. 252, no. 2, pp. 260-292, Journal Name: Nucl. Phys., A, v. 252, no. 2, pp. 260-292; ISSN NUPAB
- Country of Publication:
- Netherlands
- Language:
- English
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Related Subjects
643003*
BRANCHING RATIO-- CORIOLIS FORCE-- DE-EXCITATION-- GROUND STATES-- MATRIX ELEMENTS-- NEUTRON SEPARATION ENERGY-- PARITY-- ROTATIONAL STATES-- SPIN-- VIBRATIONAL STATES-- YTTERBIUM 172
CAPTURE-- GAMMA RADIATION-- GAMMA SPECTRA-- INTERMEDIATE NEUTRONS-- KEV RANGE 01-10-- NEUTRON REACTIONS-- THERMAL NEUTRONS-- YTTERBIUM 171-- YTTERBIUM 172
N68831* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
150 <= A <= 189--Energy Levels & Transitions
N68851 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
150 <= A <= 189--Nuclear Reactions & Scattering
BRANCHING RATIO-- CORIOLIS FORCE-- DE-EXCITATION-- GROUND STATES-- MATRIX ELEMENTS-- NEUTRON SEPARATION ENERGY-- PARITY-- ROTATIONAL STATES-- SPIN-- VIBRATIONAL STATES-- YTTERBIUM 172
CAPTURE-- GAMMA RADIATION-- GAMMA SPECTRA-- INTERMEDIATE NEUTRONS-- KEV RANGE 01-10-- NEUTRON REACTIONS-- THERMAL NEUTRONS-- YTTERBIUM 171-- YTTERBIUM 172
N68831* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
150 <= A <= 189--Energy Levels & Transitions
N68851 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
150 <= A <= 189--Nuclear Reactions & Scattering