$\alpha$ decay of $^{159}$Re and proton emission from $^{155}$Ta - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review C Year : 2007

$\alpha$ decay of $^{159}$Re and proton emission from $^{155}$Ta

R.D. Page
  • Function : Author
L. Bianco
  • Function : Author
I.G. Darby
  • Function : Author
J. Uusitalo
  • Function : Author
D.T. Joss
  • Function : Author
T. Grahn
  • Function : Author
R.D. Herzberg
  • Function : Author
J. Pakarinen
  • Function : Author
J. M. Thomson
  • Function : Author
S. Eeckhaudt
  • Function : Author
P.T. Greenlees
  • Function : Author
P.M. Jones
  • Function : Author
R. Julin
  • Function : Author
S. Juutinen
  • Function : Author
S. Ketelhut
  • Function : Author
M. Leino
  • Function : Author
A.P. Leppanen
  • Function : Author
M. Nyman
  • Function : Author
P. Rahkila
  • Function : Author
J. Saren
  • Function : Author
C. Scholey
  • Function : Author
A. Steer
  • Function : Author
M.B.G. Hornillos
  • Function : Author
J.S. Al-Khalili
  • Function : Author
A.J. Cannon
  • Function : Author
P.D. Stevenson
  • Function : Author
S. Erturk
  • Function : Author
B. Gall
B. Hadinia
  • Function : Author
M. Venhart
  • Function : Author
J. Simpson
  • Function : Author

Abstract

The alpha decay of Re-159 has been observed for the first time in reactions of 300 MeV Ni-58 ions with an isotopically enriched Cd-106 target. The Re-159 ions were separated in-flight using the RITU separator and implanted into the GREAT spectrometer. The alpha decay emanates from the proton-emitting pi h(11/2) state in Re-159 with an energy of E-alpha=6776 +/- 26 keV and a branching ratio of 7.5 +/- 3.5%. This alpha decay populates a state in the closed neutron shell nucleus Ta-155, which decays by emitting 1444 +/- 15 keV protons with a half-life of 2.9(-1.1)(+1.5) ms. These values are consistent with the emission of the proton from a pi h(11/2) orbital. These results fit in with the systematics of proton and alpha-particle separation energies in the region, but disagree with the previously reported decay properties of Ta-155

Dates and versions

in2p3-00171810 , version 1 (13-09-2007)

Identifiers

Cite

R.D. Page, L. Bianco, I.G. Darby, J. Uusitalo, D.T. Joss, et al.. $\alpha$ decay of $^{159}$Re and proton emission from $^{155}$Ta. Physical Review C, 2007, 75, pp.061302. ⟨10.1103/PhysRevC.75.061302⟩. ⟨in2p3-00171810⟩
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