First observation of Zn54 and its decay by two-proton emission

B. Blank; A. Bey; G. Canchel; C. Dossat; A. Fleury; J. Giovinazzo; I. Matea; N. Adimi; F. De Oliveira; I. Stefan; G. Georgiev; S. Grévy; J. C. Thomas; C. Borcea; D. Cortina; M. Caamano; M. Stanoiu; F. Aksouh; B. A. Brown; F. C. Barker; W. A. Richter

doi:10.1103/PhysRevLett.94.232501

First observation of Zn54 and its decay by two-proton emission

B. Blank^*, A. Bey, G. Canchel, C. Dossat, A. Fleury, J. Giovinazzo, I. Matea, N. Adimi, F. De Oliveira, I. Stefan, G. Georgiev, S. Grévy, J. C. Thomas, C. Borcea, D. Cortina, M. Caamano, M. Stanoiu, F. Aksouh, B. A. Brown, F. C. BarkerW. A. Richter

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

176 Citations (Scopus)

Abstract

The nucleus Zn54 has been observed for the first time in an experiment at the SISSI/LISE3 facility of GANIL in the quasifragmentation of a Ni58 beam at 74.5MeV/nucleon in a Ninat target. The fragments were analyzed by means of the ALPHA-LISE3 separator and implanted in a silicon-strip detector where correlations in space and time between implantation and subsequent decay events allowed us to generate almost background free decay spectra for about 25 different nuclei at the same time. Eight Zn54 implantation events were observed. From the correlated decay events, the half-life of Zn54 is determined to be 3.2-0.8+1.8ms. Seven of the eight implantations are followed by two-proton emission with a decay energy of 1.48(2)MeV. The decay energy and the partial half-life are compared to model predictions and allow for a test of these two-proton decay models.

Original language	English
Article number	232501
Journal	Physical Review Letters
Volume	94
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.94.232501
Publication status	Published - 17 Jun 2005

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Blank, B., Bey, A., Canchel, G., Dossat, C., Fleury, A., Giovinazzo, J., Matea, I., Adimi, N., De Oliveira, F., Stefan, I., Georgiev, G., Grévy, S., Thomas, J. C., Borcea, C., Cortina, D., Caamano, M., Stanoiu, M., Aksouh, F., Brown, B. A., ... Richter, W. A. (2005). First observation of Zn54 and its decay by two-proton emission. Physical Review Letters, 94(23), Article 232501. https://doi.org/10.1103/PhysRevLett.94.232501

@article{4ddce852f58f4b4ebcb44442054a3b94,

title = "First observation of Zn54 and its decay by two-proton emission",

abstract = "The nucleus Zn54 has been observed for the first time in an experiment at the SISSI/LISE3 facility of GANIL in the quasifragmentation of a Ni58 beam at 74.5MeV/nucleon in a Ninat target. The fragments were analyzed by means of the ALPHA-LISE3 separator and implanted in a silicon-strip detector where correlations in space and time between implantation and subsequent decay events allowed us to generate almost background free decay spectra for about 25 different nuclei at the same time. Eight Zn54 implantation events were observed. From the correlated decay events, the half-life of Zn54 is determined to be 3.2-0.8+1.8ms. Seven of the eight implantations are followed by two-proton emission with a decay energy of 1.48(2)MeV. The decay energy and the partial half-life are compared to model predictions and allow for a test of these two-proton decay models.",

author = "B. Blank and A. Bey and G. Canchel and C. Dossat and A. Fleury and J. Giovinazzo and I. Matea and N. Adimi and {De Oliveira}, F. and I. Stefan and G. Georgiev and S. Gr{\'e}vy and Thomas, {J. C.} and C. Borcea and D. Cortina and M. Caamano and M. Stanoiu and F. Aksouh and Brown, {B. A.} and Barker, {F. C.} and Richter, {W. A.}",

year = "2005",

month = jun,

day = "17",

doi = "10.1103/PhysRevLett.94.232501",

language = "English",

volume = "94",

journal = "Physical Review Letters",

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publisher = "American Physical Society",

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Blank, B, Bey, A, Canchel, G, Dossat, C, Fleury, A, Giovinazzo, J, Matea, I, Adimi, N, De Oliveira, F, Stefan, I, Georgiev, G, Grévy, S, Thomas, JC, Borcea, C, Cortina, D, Caamano, M, Stanoiu, M, Aksouh, F, Brown, BA, Barker, FC & Richter, WA 2005, 'First observation of Zn54 and its decay by two-proton emission', Physical Review Letters, vol. 94, no. 23, 232501. https://doi.org/10.1103/PhysRevLett.94.232501

TY - JOUR

T1 - First observation of Zn54 and its decay by two-proton emission

AU - Blank, B.

AU - Bey, A.

AU - Canchel, G.

AU - Dossat, C.

AU - Fleury, A.

AU - Giovinazzo, J.

AU - Matea, I.

AU - Adimi, N.

AU - De Oliveira, F.

AU - Stefan, I.

AU - Georgiev, G.

AU - Grévy, S.

AU - Thomas, J. C.

AU - Borcea, C.

AU - Cortina, D.

AU - Caamano, M.

AU - Stanoiu, M.

AU - Aksouh, F.

AU - Brown, B. A.

AU - Barker, F. C.

AU - Richter, W. A.

PY - 2005/6/17

Y1 - 2005/6/17

N2 - The nucleus Zn54 has been observed for the first time in an experiment at the SISSI/LISE3 facility of GANIL in the quasifragmentation of a Ni58 beam at 74.5MeV/nucleon in a Ninat target. The fragments were analyzed by means of the ALPHA-LISE3 separator and implanted in a silicon-strip detector where correlations in space and time between implantation and subsequent decay events allowed us to generate almost background free decay spectra for about 25 different nuclei at the same time. Eight Zn54 implantation events were observed. From the correlated decay events, the half-life of Zn54 is determined to be 3.2-0.8+1.8ms. Seven of the eight implantations are followed by two-proton emission with a decay energy of 1.48(2)MeV. The decay energy and the partial half-life are compared to model predictions and allow for a test of these two-proton decay models.

AB - The nucleus Zn54 has been observed for the first time in an experiment at the SISSI/LISE3 facility of GANIL in the quasifragmentation of a Ni58 beam at 74.5MeV/nucleon in a Ninat target. The fragments were analyzed by means of the ALPHA-LISE3 separator and implanted in a silicon-strip detector where correlations in space and time between implantation and subsequent decay events allowed us to generate almost background free decay spectra for about 25 different nuclei at the same time. Eight Zn54 implantation events were observed. From the correlated decay events, the half-life of Zn54 is determined to be 3.2-0.8+1.8ms. Seven of the eight implantations are followed by two-proton emission with a decay energy of 1.48(2)MeV. The decay energy and the partial half-life are compared to model predictions and allow for a test of these two-proton decay models.

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U2 - 10.1103/PhysRevLett.94.232501

DO - 10.1103/PhysRevLett.94.232501

M3 - Article

SN - 0031-9007

VL - 94

JO - Physical Review Letters

JF - Physical Review Letters

IS - 23

M1 - 232501

ER -

First observation of Zn54 and its decay by two-proton emission

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