Physics Letters B (Dec 2023)
Decay spectroscopy at the two-proton drip line: Radioactivity of the new nuclides 160Os and 156W
- A.D. Briscoe,
- R.D. Page,
- J. Uusitalo,
- D.T. Joss,
- M.A.M. AlAqeel,
- B. Alayed,
- B. Andel,
- S. Antalic,
- K. Auranen,
- H. Ayatollahzadeh,
- H. Badran,
- L. Barber,
- G. Beeton,
- M. Birova,
- V. Bogdanoff,
- R.M. Clark,
- J.G. Cubiss,
- D.M. Cullen,
- J. Deary,
- U. Forsberg,
- T. Grahn,
- P.T. Greenlees,
- J.B. Hilton,
- A. Illana,
- H. Joukainen,
- D.S. Judson,
- R. Julin,
- H. Jutila,
- J.M. Keatings,
- M. Labiche,
- M. Leino,
- M.C. Lewis,
- J. Louko,
- M. Luoma,
- I. Martel,
- A. McCarter,
- P.P. McKee,
- P. Mosat,
- S.N. Nathaniel,
- O. Neuvonen,
- D. O'Donnell,
- J. Ojala,
- C.A.A. Page,
- A.M. Plaza,
- J. Pakarinen,
- P. Papadakis,
- E. Parr,
- J. Partanen,
- P. Rahkila,
- P. Ruotsalainen,
- M. Sandzelius,
- J. Sarén,
- B. Saygi,
- J. Smallcombe,
- J.F. Smith,
- J. Sorri,
- C.M. Sullivan,
- S. Szwec,
- H. Tann,
- A. Tolosa-Delgado,
- E. Uusikylä,
- M. Venhart,
- L.J. Waring,
- G. Zimba
Affiliations
- A.D. Briscoe
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom; Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland; Corresponding author at: Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom.
- R.D. Page
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- J. Uusitalo
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland; Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- D.T. Joss
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- M.A.M. AlAqeel
- Physics Department, Imam Mohammad Ibn Saud Islamic University (IMISU), P.O. Box 90950, Riyadh, 11623, Saudi Arabia; Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- B. Alayed
- Department of Physics, College of Science and Art at Rass-Qassim University, 53-51921, Saudi Arabia; Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- B. Andel
- Department of Nuclear Physics and Biophysics, Comenius University in Bratislava, 84248 Bratislava, Slovakia
- S. Antalic
- Department of Nuclear Physics and Biophysics, Comenius University in Bratislava, 84248 Bratislava, Slovakia
- K. Auranen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- H. Ayatollahzadeh
- School of Computing, Engineering, and Physics Sciences, University of the West of Scotland, Paisley, PA1 2BE, United Kingdom
- H. Badran
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- L. Barber
- Department of Physics and Astronomy, Schuster Building, The University of Manchester, Manchester, M13 9PL, United Kingdom
- G. Beeton
- School of Computing, Engineering, and Physics Sciences, University of the West of Scotland, Paisley, PA1 2BE, United Kingdom
- M. Birova
- Institute of Physics, Slovak Academy of Sciences, 84511 Bratislava, Slovakia
- V. Bogdanoff
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- R.M. Clark
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States of America
- J.G. Cubiss
- School of Physics, Engineering and Technology, The University of York, York, YO10 5DD, United Kingdom
- D.M. Cullen
- Department of Physics and Astronomy, Schuster Building, The University of Manchester, Manchester, M13 9PL, United Kingdom
- J. Deary
- School of Computing, Engineering, and Physics Sciences, University of the West of Scotland, Paisley, PA1 2BE, United Kingdom
- U. Forsberg
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- T. Grahn
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- P.T. Greenlees
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- J.B. Hilton
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom; Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- A. Illana
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland; Departamento de Estructura de la Materia, Física Térmica y Electrónica and IPARCOS, Universidad Complutense de Madrid, E-28040 Madrid, Spain
- H. Joukainen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- D.S. Judson
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- R. Julin
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- H. Jutila
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- J.M. Keatings
- School of Computing, Engineering, and Physics Sciences, University of the West of Scotland, Paisley, PA1 2BE, United Kingdom
- M. Labiche
- Science and Technology Facilities Council, Daresbury Laboratory, Warrington WA4 4AD, United Kingdom
- M. Leino
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- M.C. Lewis
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- J. Louko
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- M. Luoma
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- I. Martel
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom; Faculty of Experimental Sciences, University of Huelva, 21071 Huelva, Spain
- A. McCarter
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- P.P. McKee
- School of Computing, Engineering, and Physics Sciences, University of the West of Scotland, Paisley, PA1 2BE, United Kingdom
- P. Mosat
- Department of Nuclear Physics and Biophysics, Comenius University in Bratislava, 84248 Bratislava, Slovakia
- S.N. Nathaniel
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- O. Neuvonen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- D. O'Donnell
- School of Computing, Engineering, and Physics Sciences, University of the West of Scotland, Paisley, PA1 2BE, United Kingdom
- J. Ojala
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- C.A.A. Page
- School of Physics, Engineering and Technology, The University of York, York, YO10 5DD, United Kingdom
- A.M. Plaza
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom; Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- J. Pakarinen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- P. Papadakis
- Science and Technology Facilities Council, Daresbury Laboratory, Warrington WA4 4AD, United Kingdom
- E. Parr
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- J. Partanen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- P. Rahkila
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- P. Ruotsalainen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- M. Sandzelius
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- J. Sarén
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- B. Saygi
- Ankara University, Institute of Nuclear Sciences, Ankara, Türkiye; Turkish Energy Nuclear and Mineral Research Agency, Nuclear Energy Research Institute, Ankara, Türkiye
- J. Smallcombe
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- J.F. Smith
- School of Computing, Engineering, and Physics Sciences, University of the West of Scotland, Paisley, PA1 2BE, United Kingdom
- J. Sorri
- Sodankylä Geophysical Observatory, University of Oulu, FIN-99600 Sodankylä, Finland
- C.M. Sullivan
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- S. Szwec
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- H. Tann
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom; Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- A. Tolosa-Delgado
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- E. Uusikylä
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- M. Venhart
- Institute of Physics, Slovak Academy of Sciences, 84511 Bratislava, Slovakia
- L.J. Waring
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- G. Zimba
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- Journal volume & issue
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Vol. 847
p. 138310
Abstract
The radioactivity of 76160Os84 and 74156W82 that lie at the two-proton drip line has been measured in an experiment performed at the Accelerator Laboratory of the University of Jyväskylä. The 160Os nuclei were produced using fusion-evaporation reactions induced by a beam of 310 MeV 58Ni ions bombarding a 106Cd target. The 160Os ions were separated in flight using the recoil separator MARA and implanted into a double-sided silicon strip detector, which was used to measure their decays. The α decays of the ground state of 160Os (Eα = 7092(15) keV, t1/2 = 97−32+97 μs) and its isomeric state (Eα = 8890(10) keV, t1/2 = 41−9+15 μs) were measured, allowing the excitation energy of the isomer to be determined as 1844(18) keV. These α-decay properties and the excitation energy of the isomer are compared with systematics. The α decays were correlated with subsequent decays to investigate the β decays of the ground state of 156W, revealing that unlike its isotones, both low-lying isomers were populated in its daughter nuclide, 156Ta. An improved value for the half-life of the proton-decaying high-spin isomeric state in 73156Ta83 of 333−22+25 ms was obtained in a separate experiment using the same experimental systems with a 102Pd target. This result was employed to improve the precision of the half-life determined for 156W, which was measured as 157−34+57 ms.
