Tz=-1 → 0 β-Decays of 54Ni, 50Fe, 46Cr, and 42Ti and Comparison With Mirror (3He,t) Measurements

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

We have studied the β decay of the Tz=−1, f7/2 shell nuclei Ni54, Fe50, Cr46, and Ti42 produced in fragmentation reactions. The proton separation energies in the daughter Tz=0 nuclei are relatively large (≈4–5 MeV) so studies of the γ rays are essential. The experiments were performed at GSI as part of the Stopped-beam campaign with the RISING setup consisting of 15 Euroball Cluster Ge detectors. From the newly obtained high precision β-decay half-lives, excitation energies, and β branching ratios, we were able to extract Fermi and Gamow-Teller transition strengths in these β decays. With these improved results it was possible to compare in detail the Gamow-Teller (GT) transition strengths observed in beta decay including a sensitivity limit with the strengths of the Tz=+1 to Tz=0 transitions derived from high resolution (3He,t) reactions on the mirror target nuclei at RCNP, Osaka. The accumulated B(GT) strength obtained from both experiments looks very similar although the charge exchange reaction provides information on a broader energy range. Using the “merged analysis” one can obtain a full picture of the B(GT) over the full Qβ range. Looking at the individual transitions some differences are observed, especially for the weak transitions. Their possible origins are discussed.

Detaljer

Författare
  • F. Molina
  • B. Rubio
  • Y. Fujita
  • W. Gelletly
  • J. Agramunt
  • A. Algora
  • J. Benlliure
  • P. Boutachkov
  • L. Cáceres
  • R. B. Cakirli
  • E. Casarejos
  • C. Domingo-Pardo
  • P. Doornenbal
  • A. Gadea
  • E. Ganioğlu
  • M. Gascón
  • H. Geissel
  • J. Gerl
  • M. Górska
  • J. Grȩbosz
  • Robert Hoischen
  • R. Kumar
  • N. Kurz
  • I. Kojouharov
  • L. Amon Susam
  • H. Matsubara
  • A. I. Morales
  • Y. Oktem
  • D. Pauwels
  • D. Pérez-Loureiro
  • S. Pietri
  • Zs. Podolyák
  • W. Prokopowicz
  • H. Schaffner
  • S. J. Steer
  • J. L. Tain
  • A. Tamii
  • S. Tashenov
  • J. J. Valiente-Dobón
  • S. Verma
  • H-J. Wollersheim
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Subatomär fysik

Nyckelord

Originalspråkengelska
Artikelnummer014301
Antal sidor19
TidskriftPhysical Review C (Nuclear Physics)
Volym91
Utgivningsnummer1
StatusPublished - 2015
PublikationskategoriForskning
Peer review utfördJa

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Relaterad forskningsoutput

Rudolph, D., Hoischen, R., Hellström, M., Pietri, S., Podolyák, Z., Regan, P. H., Garnsworthy, A. B., Steer, S. J., Becker, F., Bednarczyk, P., Caceres, L., Doornenbal, P., Gerl, J., Górska, M., Grebosz, J., Kojouharov, I., Kurz, N., Prokopowicz, W., Schaffner, H., Wollersheim, H. J. & 11 andraAndersson, L-L., Atanasova, L., Balabanski, D. L., Bentley, M. A., Blazhev, A., Brandau, C., Brown, J. R., Claes Fahlander, Johansson, E., Jungclaus, A. & Lenzi, S. M., 2008, I : Physical Review C (Nuclear Physics). 78, 2, 021301(R).

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Pietri, S., Regan, P. H., Podolyák, Z., Dirk Rudolph, Margareta Hellström, Andersson, L-L., Claes Fahlander & Johansson, E., 2007, I : Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 261, 1-2, s. 1079-1083

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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Related projects

Dirk Rudolph, Claes Fahlander, Pavel Golubev, Luis Sarmiento Pico, Anton Såmark-Roth, Daniel Cox, Ulrika Forsberg, Christian Lorenz, Natasa Lalovic, Natasa Lalovic, Ulrika Forsberg, Jnaneswari Gellanki, Robert Hoischen, Emma Johansson, Lise-Lotte Andersson, Rickard du Rietz, Jörgen Ekman & Corina Andreoiu

Kungliga Fysiografiska Sällskapet i Lund, Swedish Research Council

2002/01/012021/12/31

Projekt: Forskning

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Relaterade aktiviteter

Rudolph, D. (Talare)
2010 aug 31

Aktivitet: Föredrag eller presentationInbjuden talare

Rudolph, D. (ordförande)
20082009

Aktivitet: Konsultverksamhet, expertuppdrag och medlemskapMedlem i styrelse/kommitté/råd etc

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