skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Prompt and delayed spectroscopy of At 203 : Observation of a shears band and a 29 / 2 + isomeric state

Abstract

Using fusion-evaporation reactions, a gas-filled recoil separator, recoil-gating technique and recoil-isomer decay tagging technique we have extended the level scheme of At-203 (N = 118) significantly. We have observed an isomeric [tau = 14.1(3) mu s] state with a spin and parity of 29/2(+). The isomeric state is suggested to originate from the pi(h(9/2)) circle times |Po-202; 11(-)> coupling, and it is depopulated through 286 keV E2 and 366 keV E3 transitions. In addition, we have observed a cascade of magnetic-dipole transitions which is suggested to be generated by the shears mechanism.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; « less
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
European Commission - Community Research and Development Information Service (CORDIS) - Seventh Framework Programme (FP7); United Kingdom Science and Technology Facilities Council; USDOE Office of Science - Office of Nuclear Physics
OSTI Identifier:
1426226
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review C; Journal Volume: 97; Journal Issue: 2
Country of Publication:
United States
Language:
English

Citation Formats

Auranen, K., Uusitalo, J., Juutinen, S., Badran, H., Defranchi Bisso, F., Cox, D., Grahn, T., Greenlees, P. T., Herzáň, A., Jakobsson, U., Julin, R., Konki, J., Leino, M., Lightfoot, A., Mallaburn, M. J., Neuvonen, O., Pakarinen, J., Papadakis, P., Partanen, J., Rahkila, P., Sandzelius, M., Sarén, J., Scholey, C., Sorri, J., Stolze, S., and Wang, Y. K.. Prompt and delayed spectroscopy of At203 : Observation of a shears band and a 29/2+ isomeric state. United States: N. p., 2018. Web. doi:10.1103/PhysRevC.97.024301.
Auranen, K., Uusitalo, J., Juutinen, S., Badran, H., Defranchi Bisso, F., Cox, D., Grahn, T., Greenlees, P. T., Herzáň, A., Jakobsson, U., Julin, R., Konki, J., Leino, M., Lightfoot, A., Mallaburn, M. J., Neuvonen, O., Pakarinen, J., Papadakis, P., Partanen, J., Rahkila, P., Sandzelius, M., Sarén, J., Scholey, C., Sorri, J., Stolze, S., & Wang, Y. K.. Prompt and delayed spectroscopy of At203 : Observation of a shears band and a 29/2+ isomeric state. United States. doi:10.1103/PhysRevC.97.024301.
Auranen, K., Uusitalo, J., Juutinen, S., Badran, H., Defranchi Bisso, F., Cox, D., Grahn, T., Greenlees, P. T., Herzáň, A., Jakobsson, U., Julin, R., Konki, J., Leino, M., Lightfoot, A., Mallaburn, M. J., Neuvonen, O., Pakarinen, J., Papadakis, P., Partanen, J., Rahkila, P., Sandzelius, M., Sarén, J., Scholey, C., Sorri, J., Stolze, S., and Wang, Y. K.. Thu . "Prompt and delayed spectroscopy of At203 : Observation of a shears band and a 29/2+ isomeric state". United States. doi:10.1103/PhysRevC.97.024301.
@article{osti_1426226,
title = {Prompt and delayed spectroscopy of At203 : Observation of a shears band and a 29/2+ isomeric state},
author = {Auranen, K. and Uusitalo, J. and Juutinen, S. and Badran, H. and Defranchi Bisso, F. and Cox, D. and Grahn, T. and Greenlees, P. T. and Herzáň, A. and Jakobsson, U. and Julin, R. and Konki, J. and Leino, M. and Lightfoot, A. and Mallaburn, M. J. and Neuvonen, O. and Pakarinen, J. and Papadakis, P. and Partanen, J. and Rahkila, P. and Sandzelius, M. and Sarén, J. and Scholey, C. and Sorri, J. and Stolze, S. and Wang, Y. K.},
abstractNote = {Using fusion-evaporation reactions, a gas-filled recoil separator, recoil-gating technique and recoil-isomer decay tagging technique we have extended the level scheme of At-203 (N = 118) significantly. We have observed an isomeric [tau = 14.1(3) mu s] state with a spin and parity of 29/2(+). The isomeric state is suggested to originate from the pi(h(9/2)) circle times |Po-202; 11(-)> coupling, and it is depopulated through 286 keV E2 and 366 keV E3 transitions. In addition, we have observed a cascade of magnetic-dipole transitions which is suggested to be generated by the shears mechanism.},
doi = {10.1103/PhysRevC.97.024301},
journal = {Physical Review C},
number = 2,
volume = 97,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 2018},
month = {Thu Feb 01 00:00:00 EST 2018}
}