Journal articles
Two-proton radioactivity of $^{45}$Fe
J. Giovinazzo
1
Bertram Blank
1
M. Chartier
1
S. Czajkowski
1
Agnès Fleury
1
M.J. Lopez Jimenez
1
M.S. Pravikoff
1
J.C. Thomas
1
Francois de Oliveira Santos
2
M. Lewitowicz
2
V. Maslov
M. Stanoiu
2
R. Grzywacz
M. Pfutzner
C. Borcea
B.A. Brown
J. Giovinazzo 1
Author IdHAL : jerome-giovinazzo ORCID : https://orcid.org/0000-0001-7436-8877
Bertram Blank 1
Author IdHAL : bertram-blank ORCID : https://orcid.org/0000-0001-8050-6850
M. Chartier 1
Author
S. Czajkowski 1
Author
Francois de Oliveira Santos 2
Author IdHAL : francois-de-oliveira-santos ORCID : https://orcid.org/0000-0003-4539-5985
M. Lewitowicz 2
Author
V. Maslov
Author
M. Stanoiu 2
Author
1
CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan (Chemin du Solarium - BP 120 - 33175 Gradignan Cedex - France)
- Université Sciences et Technologies - Bordeaux 1 (351 cours de la Libération - 33405 Talence cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR5797 (France)
2
GANIL - Grand Accélérateur National d'Ions Lourds (Bvd Henri Becquerel - BP 55027 - 14076 CAEN CEDEX 5 - France)
- CNRS - Centre National de la Recherche Scientifique : UPR3266 (France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/GANIL (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
Abstract : In an experiment at the SISSI-LISE3 facility of GANIL, the decay of the proton drip-line nucleus Fe45 has been studied after projectile fragmentation of a Ni58 primary beam at 75 MeV/nucleon impinging on a natural nickel target. Fragment-implantation events have been correlated with radioactive decay events in a 16x16 pixel silicon strip detector on an event-by-event basis. The decay-energy spectrum of Fe45 implants shows a distinct peak at (1.06+/-0.04)MeV with a half-life of T1/2 = (4.7+3.4-1.4)ms. None of the events in this peak is in coincidence with beta particles which were searched for in a detector next to the implantation detector. For a longer correlation interval, daughter decays of the two-proton daughter Cr43 can be observed after Fe45 implantation. The decay energy for Fe45 agrees nicely with several theoretical predictions for two-proton emission. Barrier-penetration calculations slightly favour a di-proton emission picture over an emission of two individual protons and point thus to a He2 emission mode.
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Journal articles
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http://hal.in2p3.fr/in2p3-00019909
Contributor : Pascale Chambon <>
Submitted on : Friday, July 21, 2006 - 3:05:00 PM
Last modification on : Monday, November 30, 2020 - 11:04:04 AM
Contributor : Pascale Chambon <>
Submitted on : Friday, July 21, 2006 - 3:05:00 PM
Last modification on : Monday, November 30, 2020 - 11:04:04 AM
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- HAL Id : in2p3-00019909, version 1
- ARXIV : nucl-ex/0205013
- DOI : 10.1103/PhysRevLett.89.102501
Citation
J. Giovinazzo, Bertram Blank, M. Chartier, S. Czajkowski, Agnès Fleury, et al.. Two-proton radioactivity of $^{45}$Fe. Physical Review Letters, American Physical Society, 2002, 89, pp.102501. ⟨10.1103/PhysRevLett.89.102501⟩. ⟨in2p3-00019909⟩
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