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Decay Spectroscopy of Element 115 Daughters: 280Rg -> 276Mt and 276Mt -> 272Bh

Gates, J. M.; Gregorich, K. E.; Gothe, O. R.; Uribe, E. C.; Pang, G. K.; Bleuel, D. L.; Block, M.; Clark, R. M.; Campbell, C. M. and Crawford, H. L., et al. (2015) In Physical Review C (Nuclear Physics) 92(2). p.021301-021301
Abstract
Forty-six decay chains, assigned to the decay of 288-115, were produced using the 243Am(48Ca,3n)288-115 reaction at the Lawrence Berkeley National Laboratory 88-in. cyclotron. The resulting series of α decays were studied using α-photon and α-x-ray spectroscopies. Multiple α-photon coincidences were observed in the element 115 decay chain members, particularly in the third- and fourth-generation decays (presumed to be 280Rg and 276Mt, respectively). Upon combining these data with those from 22 288-115 decay chains observed in a similar experiment, updated level schemes in 276Mt and 272Bh (populated by the α decay of 280Rg and 276Mt, respectively) are proposed. Photons were observed in the energy range expected for K x rays coincident with... (More)
Forty-six decay chains, assigned to the decay of 288-115, were produced using the 243Am(48Ca,3n)288-115 reaction at the Lawrence Berkeley National Laboratory 88-in. cyclotron. The resulting series of α decays were studied using α-photon and α-x-ray spectroscopies. Multiple α-photon coincidences were observed in the element 115 decay chain members, particularly in the third- and fourth-generation decays (presumed to be 280Rg and 276Mt, respectively). Upon combining these data with those from 22 288-115 decay chains observed in a similar experiment, updated level schemes in 276Mt and 272Bh (populated by the α decay of 280Rg and 276Mt, respectively) are proposed. Photons were observed in the energy range expected for K x rays coincident with the α decay of both 280Rg and 276Mt. However, Compton scattering of higher-energy γ rays and discrete transitions are present in the K x-ray region preventing a definitive Z identification to be made based on observation of characteristic K x-ray energies. (Less)
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Physical Review C (Nuclear Physics)
volume
92
issue
2
pages
021301 - 021301
publisher
American Physical Society
external identifiers
  • wos:000358933500001
  • scopus:84939510773
ISSN
0556-2813
DOI
10.1103/PhysRevC.92.021301
language
English
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yes
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d0081729-de96-455d-9272-c5bbd0150d17 (old id 7761314)
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http://link.aps.org/doi/10.1103/PhysRevC.92.021301
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2015-08-13 18:05:57
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2018-06-17 04:27:06
@article{d0081729-de96-455d-9272-c5bbd0150d17,
  abstract     = {Forty-six decay chains, assigned to the decay of 288-115, were produced using the 243Am(48Ca,3n)288-115 reaction at the Lawrence Berkeley National Laboratory 88-in. cyclotron. The resulting series of α decays were studied using α-photon and α-x-ray spectroscopies. Multiple α-photon coincidences were observed in the element 115 decay chain members, particularly in the third- and fourth-generation decays (presumed to be 280Rg and 276Mt, respectively). Upon combining these data with those from 22 288-115 decay chains observed in a similar experiment, updated level schemes in 276Mt and 272Bh (populated by the α decay of 280Rg and 276Mt, respectively) are proposed. Photons were observed in the energy range expected for K x rays coincident with the α decay of both 280Rg and 276Mt. However, Compton scattering of higher-energy γ rays and discrete transitions are present in the K x-ray region preventing a definitive Z identification to be made based on observation of characteristic K x-ray energies.},
  author       = {Gates, J. M. and Gregorich, K. E. and Gothe, O. R. and Uribe, E. C. and Pang, G. K. and Bleuel, D. L. and Block, M. and Clark, R. M. and Campbell, C. M. and Crawford, H. L. and Cromaz, M. and Di Nitto, A. and Düllmann, Ch. E. and Esker, N. E. and Fahlander, Claes and Fallon, P. and Farjadi, R. M. and Forsberg, Ulrika and Khuyagbaatar, J. and Loveland, W. and Macchiavelli, A. O. and May, E. M. and Mudder, P. R. and Olive, D. T. and Rice, A. C. and Rissanen, J. and Rudolph, Dirk and Sarmiento, Luis and Shusterman, J. A. and Stoyer, M. A. and Wiens, A. and Yakushev, A. and Nitsche, H.},
  issn         = {0556-2813},
  language     = {eng},
  number       = {2},
  pages        = {021301--021301},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Decay Spectroscopy of Element 115 Daughters: 280Rg -> 276Mt and 276Mt -> 272Bh},
  url          = {http://dx.doi.org/10.1103/PhysRevC.92.021301},
  volume       = {92},
  year         = {2015},
}