ELECTRON CAPTURE DECAY OF Tm$sup 168$ AND Tm$sup 16$$sup 6$

Journal Article · Mon Feb 15 04:00:00 EST 1960 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.117.1102· OSTI ID:4143820

Jacob, K P; Mihelich, J W; Harmatz, B; Handley, T H

The electron capture of Tm/sup 168/ (87 day) to levels in Er/sup 168/ was investigated with permanent magnet spectrographs and coincidence scintillation spectrometers. The following levels in Er/sup 168/ were established: 79.8(2+), 264.3(4+), T1/2 = 1.2 x 10/sup -7/ sec), and 1543.1(3)--) kev. The internal conversion data for Tm/sup 166/ (7.7 hour) suggest levels in Er/syo 166./ at 80.6(2+), 265.1(4+), 545.3(6+) 787.1(2+), 860.6(3+), and level schemes are proposed for both Er/sup 168/ and Er/sup 166/. The levels at 822, 897, and 996 kev in Er/sup 168/ and 787, 861, and 957 kev in Er/sup 166/ may possibly be associated with electric quadrupole (gamma) vibrations. Some general features regarding these vibrational levels are discussed and compared with available data on other even-even nuclei in the rare earth region. (auth)

• Research Organization: Univ. of Notre Dame, Ind.; Oak Ridge National Lab., Tenn.
• NSA Number: NSA-14-013283
• OSTI ID: 4143820
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 117; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CAPTURE
COINCIDENCE METHODS
DECAY
ELECTRIC MOMENTS
ELECTRONS
ENERGY LEVELS
ERBIUM 168
HALF-LIFE
INTERNAL CONVERSION
MAGNETIC FIELDS
MEASURED VALUES
PARITY
PHYSICS
QUADRUPOLES
SCINTILLATION COUNTERS
SPECTROMETERS
SPIN
THULIUM 166
THULIUM 168
VIBRATIONS