α decay of the very neutron-deficient isotopes 197-199Fr

Z. Kalaninová; A.N. Andreyev; S. Antalic; B. Andel; Š. Šáro; J.F.W. Lane; V. Liberati; K. Sandhu; F.P. Heßberger; D. Ackermann; S. Hofmann; B. Kindler; B. Lommel; M.C. Drummond; R.D. Page; A. Thornthwaite; M. Huyse; E. Rapisarda; P. Van Duppen

doi:10.1103/PhysRevC.87.044335

α decay of the very neutron-deficient isotopes 197-199Fr

Z. Kalaninová, A.N. Andreyev, S. Antalic, B. Andel, Š. Šáro, J.F.W. Lane, V. Liberati, K. Sandhu, F.P. Heßberger, D. Ackermann, S. Hofmann, B. Kindler, B. Lommel, M.C. Drummond, R.D. Page, A. Thornthwaite, M. Huyse, E. Rapisarda, P. Van Duppen

Physics

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Abstract

Decay properties of the very neutron-deficient isotopes 197 199Fr were studied at the velocity filter Separator for Heavy Ion reaction Products (SHIP) at GSI in Darmstadt. The isotopes were produced in the 2n-4n evaporation channels of the fusion-evaporation reaction 60Ni+141Pr → 201Fr*. Improved α-decay properties of 199Fr were determined and the possible existence of two α-decaying states in this nucleus is discussed. For the isotope 198Fr a broad α-decay energy distribution was detected in the range of (7470-7930) keV and two α-decaying states were observed with half-lives of 1.1(7) and 15(3) ms. The new isotope 197Fr was identified based on the observation of one α-decay chain yielding E= 7728(15) keV and T=0.6-0.3+3.0 ms. The systematics of reduced α-decay widths are presented for neutron-deficient francium, radon, and astatine isotopes.

Original language	English
Article number	044335
Journal	Physical Review C
Volume	87
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.87.044335
Publication status	Published - 29 Apr 2013

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Kalaninová, Z., Andreyev, A. N., Antalic, S., Andel, B., Šáro, Š., Lane, J. F. W., Liberati, V., Sandhu, K., Heßberger, F. P., Ackermann, D., Hofmann, S., Kindler, B., Lommel, B., Drummond, M. C., Page, R. D., Thornthwaite, A., Huyse, M., Rapisarda, E., & Van Duppen, P. (2013). α decay of the very neutron-deficient isotopes 197-199Fr. Physical Review C, 87(4), [044335]. https://doi.org/10.1103/PhysRevC.87.044335

@article{2c5b35dd58cc44bca49747a489072485,

title = "α decay of the very neutron-deficient isotopes 197-199Fr",

abstract = "Decay properties of the very neutron-deficient isotopes 197 199Fr were studied at the velocity filter Separator for Heavy Ion reaction Products (SHIP) at GSI in Darmstadt. The isotopes were produced in the 2n-4n evaporation channels of the fusion-evaporation reaction 60Ni+141Pr → 201Fr*. Improved α-decay properties of 199Fr were determined and the possible existence of two α-decaying states in this nucleus is discussed. For the isotope 198Fr a broad α-decay energy distribution was detected in the range of (7470-7930) keV and two α-decaying states were observed with half-lives of 1.1(7) and 15(3) ms. The new isotope 197Fr was identified based on the observation of one α-decay chain yielding E= 7728(15) keV and T=0.6-0.3+3.0 ms. The systematics of reduced α-decay widths are presented for neutron-deficient francium, radon, and astatine isotopes.",

author = "Z. Kalaninov{\'a} and A.N. Andreyev and S. Antalic and B. Andel and {\v S}. {\v S}{\'a}ro and J.F.W. Lane and V. Liberati and K. Sandhu and F.P. He{\ss}berger and D. Ackermann and S. Hofmann and B. Kindler and B. Lommel and M.C. Drummond and R.D. Page and A. Thornthwaite and M. Huyse and E. Rapisarda and {Van Duppen}, P.",

year = "2013",

month = apr,

day = "29",

doi = "10.1103/PhysRevC.87.044335",

language = "English",

volume = "87",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "4",

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Kalaninová, Z, Andreyev, AN, Antalic, S, Andel, B, Šáro, Š, Lane, JFW, Liberati, V, Sandhu, K, Heßberger, FP, Ackermann, D, Hofmann, S, Kindler, B, Lommel, B, Drummond, MC, Page, RD, Thornthwaite, A, Huyse, M, Rapisarda, E & Van Duppen, P 2013, 'α decay of the very neutron-deficient isotopes 197-199Fr', Physical Review C, vol. 87, no. 4, 044335. https://doi.org/10.1103/PhysRevC.87.044335

TY - JOUR

T1 - α decay of the very neutron-deficient isotopes 197-199Fr

AU - Kalaninová, Z.

AU - Andreyev, A.N.

AU - Antalic, S.

AU - Andel, B.

AU - Šáro, Š.

AU - Lane, J.F.W.

AU - Liberati, V.

AU - Sandhu, K.

AU - Heßberger, F.P.

AU - Ackermann, D.

AU - Hofmann, S.

AU - Kindler, B.

AU - Lommel, B.

AU - Drummond, M.C.

AU - Page, R.D.

AU - Thornthwaite, A.

AU - Huyse, M.

AU - Rapisarda, E.

AU - Van Duppen, P.

PY - 2013/4/29

Y1 - 2013/4/29

N2 - Decay properties of the very neutron-deficient isotopes 197 199Fr were studied at the velocity filter Separator for Heavy Ion reaction Products (SHIP) at GSI in Darmstadt. The isotopes were produced in the 2n-4n evaporation channels of the fusion-evaporation reaction 60Ni+141Pr → 201Fr*. Improved α-decay properties of 199Fr were determined and the possible existence of two α-decaying states in this nucleus is discussed. For the isotope 198Fr a broad α-decay energy distribution was detected in the range of (7470-7930) keV and two α-decaying states were observed with half-lives of 1.1(7) and 15(3) ms. The new isotope 197Fr was identified based on the observation of one α-decay chain yielding E= 7728(15) keV and T=0.6-0.3+3.0 ms. The systematics of reduced α-decay widths are presented for neutron-deficient francium, radon, and astatine isotopes.

AB - Decay properties of the very neutron-deficient isotopes 197 199Fr were studied at the velocity filter Separator for Heavy Ion reaction Products (SHIP) at GSI in Darmstadt. The isotopes were produced in the 2n-4n evaporation channels of the fusion-evaporation reaction 60Ni+141Pr → 201Fr*. Improved α-decay properties of 199Fr were determined and the possible existence of two α-decaying states in this nucleus is discussed. For the isotope 198Fr a broad α-decay energy distribution was detected in the range of (7470-7930) keV and two α-decaying states were observed with half-lives of 1.1(7) and 15(3) ms. The new isotope 197Fr was identified based on the observation of one α-decay chain yielding E= 7728(15) keV and T=0.6-0.3+3.0 ms. The systematics of reduced α-decay widths are presented for neutron-deficient francium, radon, and astatine isotopes.

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U2 - 10.1103/PhysRevC.87.044335

DO - 10.1103/PhysRevC.87.044335

M3 - Article

AN - SCOPUS:84877111702

VL - 87

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 4

M1 - 044335

ER -

α decay of the very neutron-deficient isotopes 197-199Fr

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