Excited states in the neutron-deficient nuclei Rn197,199,201

K. Andgren; B. Cederwall; J. Uusitalo; A. N. Andreyev; S. J. Freeman; P. T. Greenlees; B. Hadinia; U. Jakobsson; A. Johnson; P. M. Jones; D. T. Joss; S. Juutinen; R. Julin; S. Ketelhut; A. Khaplanov; M. Leino; M. Nyman; R. D. Page; P. Rahkila; M. Sandzelius; P. Sapple; J. Sarén; C. Scholey; J. Simpson; J. Sorri; J. Thomson; R. Wyss

doi:10.1103/PhysRevC.77.054303

Excited states in the neutron-deficient nuclei Rn197,199,201

K. Andgren, B. Cederwall, J. Uusitalo, A. N. Andreyev, S. J. Freeman, P. T. Greenlees, B. Hadinia, U. Jakobsson, A. Johnson, P. M. Jones, D. T. Joss, S. Juutinen, R. Julin, S. Ketelhut, A. Khaplanov, M. Leino, M. Nyman, R. D. Page, P. Rahkila, M. SandzeliusP. Sapple, J. Sarén, C. Scholey, J. Simpson, J. Sorri, J. Thomson, R. Wyss

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Abstract

Excited states of the extremely neutron-deficient radon isotopes with N=111,113,115 have been studied for the first time in a series of in-beam experiments performed at the Accelerator Laboratory of the University of Jyväskylä. The reactions used were: Sn118(Kr82, 3n)Rn197, Sn120(Kr82, 3n)Rn199, Sm150(Cr52, 3n)Rn199, and Sn122(Kr82, 3n)Rn201. The γ rays emitted from excited states in the different isotopes were identified using the recoil-α-decay tagging technique. The estimated cross section for the production of 197Rnm was 7(3) nb, which is the lowest cross section reported so far for an in-beam study. The energies of the (17/2+) levels built on the isomeric (13/2+) states in Rn197,199,201 indicate a transition from an anharmonic vibrational structure toward a rotational structure at low spins for these nuclei. However, the transition is not as sharp as predicted by theory.

Original language	English
Article number	054303
Journal	Physical Review C - Nuclear Physics
Volume	77
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.77.054303
State	Published - May 2 2008
Externally published	Yes

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Andgren, K., Cederwall, B., Uusitalo, J., Andreyev, A. N., Freeman, S. J., Greenlees, P. T., Hadinia, B., Jakobsson, U., Johnson, A., Jones, P. M., Joss, D. T., Juutinen, S., Julin, R., Ketelhut, S., Khaplanov, A., Leino, M., Nyman, M., Page, R. D., Rahkila, P., ... Wyss, R. (2008). Excited states in the neutron-deficient nuclei Rn197,199,201. Physical Review C - Nuclear Physics, 77(5), Article 054303. https://doi.org/10.1103/PhysRevC.77.054303

@article{cc760932b67747abb633c125415fe3de,

title = "Excited states in the neutron-deficient nuclei Rn197,199,201",

abstract = "Excited states of the extremely neutron-deficient radon isotopes with N=111,113,115 have been studied for the first time in a series of in-beam experiments performed at the Accelerator Laboratory of the University of Jyv{\"a}skyl{\"a}. The reactions used were: Sn118(Kr82, 3n)Rn197, Sn120(Kr82, 3n)Rn199, Sm150(Cr52, 3n)Rn199, and Sn122(Kr82, 3n)Rn201. The γ rays emitted from excited states in the different isotopes were identified using the recoil-α-decay tagging technique. The estimated cross section for the production of 197Rnm was 7(3) nb, which is the lowest cross section reported so far for an in-beam study. The energies of the (17/2+) levels built on the isomeric (13/2+) states in Rn197,199,201 indicate a transition from an anharmonic vibrational structure toward a rotational structure at low spins for these nuclei. However, the transition is not as sharp as predicted by theory.",

author = "K. Andgren and B. Cederwall and J. Uusitalo and Andreyev, {A. N.} and Freeman, {S. J.} and Greenlees, {P. T.} and B. Hadinia and U. Jakobsson and A. Johnson and Jones, {P. M.} and Joss, {D. T.} and S. Juutinen and R. Julin and S. Ketelhut and A. Khaplanov and M. Leino and M. Nyman and Page, {R. D.} and P. Rahkila and M. Sandzelius and P. Sapple and J. Sar{\'e}n and C. Scholey and J. Simpson and J. Sorri and J. Thomson and R. Wyss",

year = "2008",

month = may,

day = "2",

doi = "10.1103/PhysRevC.77.054303",

language = "English",

volume = "77",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

number = "5",

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Andgren, K, Cederwall, B, Uusitalo, J, Andreyev, AN, Freeman, SJ, Greenlees, PT, Hadinia, B, Jakobsson, U, Johnson, A, Jones, PM, Joss, DT, Juutinen, S, Julin, R, Ketelhut, S, Khaplanov, A, Leino, M, Nyman, M, Page, RD, Rahkila, P, Sandzelius, M, Sapple, P, Sarén, J, Scholey, C, Simpson, J, Sorri, J, Thomson, J & Wyss, R 2008, 'Excited states in the neutron-deficient nuclei Rn197,199,201', Physical Review C - Nuclear Physics, vol. 77, no. 5, 054303. https://doi.org/10.1103/PhysRevC.77.054303

TY - JOUR

T1 - Excited states in the neutron-deficient nuclei Rn197,199,201

AU - Andgren, K.

AU - Cederwall, B.

AU - Uusitalo, J.

AU - Andreyev, A. N.

AU - Freeman, S. J.

AU - Greenlees, P. T.

AU - Hadinia, B.

AU - Jakobsson, U.

AU - Johnson, A.

AU - Jones, P. M.

AU - Joss, D. T.

AU - Juutinen, S.

AU - Julin, R.

AU - Ketelhut, S.

AU - Khaplanov, A.

AU - Leino, M.

AU - Nyman, M.

AU - Page, R. D.

AU - Rahkila, P.

AU - Sandzelius, M.

AU - Sapple, P.

AU - Sarén, J.

AU - Scholey, C.

AU - Simpson, J.

AU - Sorri, J.

AU - Thomson, J.

AU - Wyss, R.

PY - 2008/5/2

Y1 - 2008/5/2

N2 - Excited states of the extremely neutron-deficient radon isotopes with N=111,113,115 have been studied for the first time in a series of in-beam experiments performed at the Accelerator Laboratory of the University of Jyväskylä. The reactions used were: Sn118(Kr82, 3n)Rn197, Sn120(Kr82, 3n)Rn199, Sm150(Cr52, 3n)Rn199, and Sn122(Kr82, 3n)Rn201. The γ rays emitted from excited states in the different isotopes were identified using the recoil-α-decay tagging technique. The estimated cross section for the production of 197Rnm was 7(3) nb, which is the lowest cross section reported so far for an in-beam study. The energies of the (17/2+) levels built on the isomeric (13/2+) states in Rn197,199,201 indicate a transition from an anharmonic vibrational structure toward a rotational structure at low spins for these nuclei. However, the transition is not as sharp as predicted by theory.

AB - Excited states of the extremely neutron-deficient radon isotopes with N=111,113,115 have been studied for the first time in a series of in-beam experiments performed at the Accelerator Laboratory of the University of Jyväskylä. The reactions used were: Sn118(Kr82, 3n)Rn197, Sn120(Kr82, 3n)Rn199, Sm150(Cr52, 3n)Rn199, and Sn122(Kr82, 3n)Rn201. The γ rays emitted from excited states in the different isotopes were identified using the recoil-α-decay tagging technique. The estimated cross section for the production of 197Rnm was 7(3) nb, which is the lowest cross section reported so far for an in-beam study. The energies of the (17/2+) levels built on the isomeric (13/2+) states in Rn197,199,201 indicate a transition from an anharmonic vibrational structure toward a rotational structure at low spins for these nuclei. However, the transition is not as sharp as predicted by theory.

UR - http://www.scopus.com/inward/record.url?scp=43449092879&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.77.054303

DO - 10.1103/PhysRevC.77.054303

M3 - Article

AN - SCOPUS:43449092879

SN - 0556-2813

VL - 77

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 5

M1 - 054303

ER -

Excited states in the neutron-deficient nuclei Rn197,199,201

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