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Title: In-beam conversion-electron spectroscopy of {sup 180}Hg

Abstract

Excited states in {sup 180}Hg were populated using the {sup 147}Sm({sup 36}Ar,3n){sup 180}Hg reaction and studied by in-beam conversion-electron spectroscopy. Conversion electrons emitted at the target position were measured using the Silicon Array for Conversion Electron Detection (SACRED) spectrometer and tagged through the characteristic {alpha} decays of {sup 180}Hg detected in a position-sensitive silicon strip detector located at the focal plane of the gas-filled recoil separator Recoil Ion Transport Unit (RITU). Electron conversion of transitions previously assigned to {sup 180}Hg through in-beam {gamma}-ray spectroscopy studies was identified up to the 10{sup +}{yields}8{sup +} transition and the intensities of the conversion-electron transitions were found to be consistent with the previous multipolarity assignments. Evidence was also found for two highly converted transitions in {sup 180}Hg: a 167 keV transition is interpreted as the transition from the newly identified 2{sub 2}{sup +} state at 601 keV to the 2{sub 1}{sup +} state at 434 keV, while a 420 keV transition is assigned as the E0 decay from the 0{sup +} bandhead of the prolate-deformed configuration to the weakly deformed ground state.

Authors:
; ; ; ; ; ; ;  [1];  [1];  [2]; ; ; ; ; ; ; ; ; ; more »;  [3] « less
  1. Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE (United Kingdom)
  2. (SUPA) (United Kingdom)
  3. Department of Physics, University of Jyvaeskylae, FIN-40014 Jyvaeskylae (Finland)
Publication Date:
OSTI Identifier:
21596739
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.84.034308; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ARGON 36 REACTIONS; CONFIGURATION; CONVERSION; ELECTRON DETECTION; ELECTRON SPECTROSCOPY; ELECTRONS; ENERGY-LEVEL TRANSITIONS; EXCITED STATES; GROUND STATES; KEV RANGE 100-1000; MERCURY 180; MULTIPOLARITY; NEUTRON EMISSION; NUCLEAR DECAY; RECOILS; SAMARIUM 147 TARGET; SILICON; SPECTROMETERS; ALPHA DECAY RADIOISOTOPES; BETA DECAY RADIOISOTOPES; CHARGED PARTICLE DETECTION; DECAY; DETECTION; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTARY PARTICLES; ELEMENTS; EMISSION; ENERGY LEVELS; ENERGY RANGE; EVEN-EVEN NUCLEI; FERMIONS; HEAVY ION REACTIONS; INTERMEDIATE MASS NUCLEI; ISOTOPES; KEV RANGE; LEPTONS; MEASURING INSTRUMENTS; MERCURY ISOTOPES; NUCLEAR REACTIONS; NUCLEI; RADIATION DETECTION; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SEMIMETALS; SPECTROSCOPY; TARGETS

Citation Formats

Page, R. D., Wiseman, D. R., Butler, P. A., Herzberg, R.-D., Jones, G. D., Joss, D. T., Keenan, A., Rainovski, G. I., Andreyev, A. N., School of Engineering, University of the West of Scotland, Paisley PA1 2BE, United Kingdom and the Scottish Universities Physics Alliance, Grahn, T., Greenlees, P. T., Jones, P. M., Julin, R., Juutinen, S., Kankaanpaeae, H., Kettunen, H., Kuusiniemi, P., Leino, M., Muikku, M., and Nieminen, P. In-beam conversion-electron spectroscopy of {sup 180}Hg. United States: N. p., 2011. Web. doi:10.1103/PHYSREVC.84.034308.
Page, R. D., Wiseman, D. R., Butler, P. A., Herzberg, R.-D., Jones, G. D., Joss, D. T., Keenan, A., Rainovski, G. I., Andreyev, A. N., School of Engineering, University of the West of Scotland, Paisley PA1 2BE, United Kingdom and the Scottish Universities Physics Alliance, Grahn, T., Greenlees, P. T., Jones, P. M., Julin, R., Juutinen, S., Kankaanpaeae, H., Kettunen, H., Kuusiniemi, P., Leino, M., Muikku, M., & Nieminen, P. In-beam conversion-electron spectroscopy of {sup 180}Hg. United States. doi:10.1103/PHYSREVC.84.034308.
Page, R. D., Wiseman, D. R., Butler, P. A., Herzberg, R.-D., Jones, G. D., Joss, D. T., Keenan, A., Rainovski, G. I., Andreyev, A. N., School of Engineering, University of the West of Scotland, Paisley PA1 2BE, United Kingdom and the Scottish Universities Physics Alliance, Grahn, T., Greenlees, P. T., Jones, P. M., Julin, R., Juutinen, S., Kankaanpaeae, H., Kettunen, H., Kuusiniemi, P., Leino, M., Muikku, M., and Nieminen, P. Thu . "In-beam conversion-electron spectroscopy of {sup 180}Hg". United States. doi:10.1103/PHYSREVC.84.034308.
@article{osti_21596739,
title = {In-beam conversion-electron spectroscopy of {sup 180}Hg},
author = {Page, R. D. and Wiseman, D. R. and Butler, P. A. and Herzberg, R.-D. and Jones, G. D. and Joss, D. T. and Keenan, A. and Rainovski, G. I. and Andreyev, A. N. and School of Engineering, University of the West of Scotland, Paisley PA1 2BE, United Kingdom and the Scottish Universities Physics Alliance and Grahn, T. and Greenlees, P. T. and Jones, P. M. and Julin, R. and Juutinen, S. and Kankaanpaeae, H. and Kettunen, H. and Kuusiniemi, P. and Leino, M. and Muikku, M. and Nieminen, P.},
abstractNote = {Excited states in {sup 180}Hg were populated using the {sup 147}Sm({sup 36}Ar,3n){sup 180}Hg reaction and studied by in-beam conversion-electron spectroscopy. Conversion electrons emitted at the target position were measured using the Silicon Array for Conversion Electron Detection (SACRED) spectrometer and tagged through the characteristic {alpha} decays of {sup 180}Hg detected in a position-sensitive silicon strip detector located at the focal plane of the gas-filled recoil separator Recoil Ion Transport Unit (RITU). Electron conversion of transitions previously assigned to {sup 180}Hg through in-beam {gamma}-ray spectroscopy studies was identified up to the 10{sup +}{yields}8{sup +} transition and the intensities of the conversion-electron transitions were found to be consistent with the previous multipolarity assignments. Evidence was also found for two highly converted transitions in {sup 180}Hg: a 167 keV transition is interpreted as the transition from the newly identified 2{sub 2}{sup +} state at 601 keV to the 2{sub 1}{sup +} state at 434 keV, while a 420 keV transition is assigned as the E0 decay from the 0{sup +} bandhead of the prolate-deformed configuration to the weakly deformed ground state.},
doi = {10.1103/PHYSREVC.84.034308},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}