Decay spectroscopy at the two-proton drip line: Radioactivity of the new nuclides 160Os and 156W

Briscoe, A.D.; Page, R.D.; Uusitalo, J.; Joss, D.T.; AlAqeel, M.A.M.; Alayed, B.; Andel, B.; Antalic, S.; Auranen, K.; Ayatollahzadeh, H.; Badran, H.; Barber, L.; Beeton, G.; Birova, M.; Bogdanoff, V.; Clark, R.M.; Cubiss, J.G.; Cullen, D.M.; Deary, J.; Forsberg, U.; Grahn, T.; Greenlees, P.T.; Hilton, J.B.; Illana, A.; Joukainen, H.; Judson, D.S.; Julin, R.; Jutila, H.; Keatings, J.M.; Labiche, M.; Leino, M.; Lewis, M.C.; Louko, J.; Luoma, M.; Martel, I.; McCarter, A.; McKee, P.P.; Mosat, P.; Nathaniel, S.N.; Neuvonen, O.; O'Donnell, D.; Ojala, J.; Page, C.A.A.; Plaza, A.M.; Pakarinen, J.; Papadakis, P.; Parr, E.; Partanen, J.; Rahkila, P.; Ruotsalainen, P.; Sandzelius, M.; Sarén, J.; SAYGI, BAHADIR; Smallcombe, J.; Smith, J.F.; Sorri, J.; Sullivan, C.M.; Szwec, S.; Tann, H.; Tolosa-Delgado, A.; Uusikylä, E.; Venhart, M.; Waring, L.J.; Zimba, G.

doi:10.1016/j.physletb.2023.138310

Decay spectroscopy at the two-proton drip line: Radioactivity of the new nuclides 160Os and 156W

Atıf İçin Kopyala

Briscoe A., Page R., Uusitalo J., Joss D., AlAqeel M., Alayed B., ...Daha Fazla

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, cilt.847, 2023 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 847
Basım Tarihi: 2023
Doi Numarası: 10.1016/j.physletb.2023.138310
Dergi Adı: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, INSPEC, zbMATH, Directory of Open Access Journals
Ankara Üniversitesi Adresli: Evet

Özet

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.