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 - https://www.scopus.com/pages/publications/43449092879
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 -