1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 2Department of Physics, Nanjing University, Nanjing 210093 3State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190 4China Institute of Atomic Energy, Beijing 102413 5Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou 730000 6Graduate University of Chinese Academy of Sciences, Beijing 100049
1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 2Department of Physics, Nanjing University, Nanjing 210093 3State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190 4China Institute of Atomic Energy, Beijing 102413 5Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou 730000 6Graduate University of Chinese Academy of Sciences, Beijing 100049
摘要With the recent commissioning of a gas-filled recoil separator at Institute of Modern Physics (IMP) in Lanzhou, the decay properties of 271Ds (Z=110) were studied via the 208Pb(64Ni, n) reaction at a beam energy of 313.3 MeV. Based on the separator coupled with a position sensitive silicon strip detector, we carried out the energy−position-time correlation measurements for the implanted nucleus and its subsequent decay α's. One α−decay chain for 271Ds was established. The α energy and decay time of the 271Ds nucleus were measured to be 10.644 MeV and 96.8 ms, which are consistent with the values reported in the literature.
Abstract：With the recent commissioning of a gas-filled recoil separator at Institute of Modern Physics (IMP) in Lanzhou, the decay properties of 271Ds (Z=110) were studied via the 208Pb(64Ni, n) reaction at a beam energy of 313.3 MeV. Based on the separator coupled with a position sensitive silicon strip detector, we carried out the energy−position-time correlation measurements for the implanted nucleus and its subsequent decay α's. One α−decay chain for 271Ds was established. The α energy and decay time of the 271Ds nucleus were measured to be 10.644 MeV and 96.8 ms, which are consistent with the values reported in the literature.
[1] Weizsäcker C F v 1935 Z. Phys. A 96 431 [2] Smolańczuk R, Skalski J and Sobiczewski A 1995 Phys. Rev. C 52 1871 [3] Rutz K, Bender M, Bürvenich T, Schilling T, Reinhard P G, Maruhn J A and Greiner W 1997 Phys. Rev. C 56 238 [4] wiok S, Dobaczewski J, Heenen P H, Magierski P and Nazarewicz W 1996 Nucl. Phys. A 611 211 [5] Hofmann S and Münzenberg G 2000 Rev. Mod. Phys. 72 733 [6] Oganessian Y T 2007 J. Phys. G 34 R165 [7] Oganessian Y T, Abdullin F S, Bailey P D, Benker D E, Bennett M E, Dmitriev S N, Ezold J G, Hamilton J H, Henderson R A, Itkis M G, Lobanov Y V, Mezentsev A N, Moody K J, Nelson S L, Polyakov A N, Porter C E, Ramayya A V, Riley F D, Roberto J B, Ryabinin M A, Rykaczewski K P, Sagaidak R N, Shaughnessy D A, Shirokovsky I V, Stoyer M A, Subbotin V G, Sudowe R, Sukhov A M, Tsyganov Y S, Utyonkov V K, Voinov A A, Vostokin G K and Wilk P A 2010 Phys. Rev. Lett. 104 142502 [8] Leino M 2003 Nucl. Instrum. Methods B 204 129 [9] Morita K, Morimoto K, Kaji D, Haba H, Ideguchi E, Kanungo R, Katori K, Koura H, Kudo H, Ohnishi T, Ozawa A, Suda T, Sueki K, Tanihata I, Xu H, Yeremin A V, Yoneda A, Yoshida A, Zhao Y L and Zheng T 2004 Eur. Phys. J. A 21 257 [10] Ziegler J F, computer code SRIM-2008 available from http://www.srim.org [11] Audi G, Wapstra A H and Thibault C 2003 Nucl. Phys. A 729 337 [12] Moulton J B, Stephenson J E, Schmitt R P and Wozniak G J 1978 Nucl. Instrum. Methods 157 325 [13] Hofmann S 1998 Rep. Prog. Phys. 61 639 [14] Eskola P, Eskola K, Nurmia M and Ghiorso A 1970 Phys. Rev. C 2 1058
2012, Vol. 29 
