Статья

Sub-Barrier Coulomb Excitation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi>Sn</mml:mi><mml:mprescripts/><mml:none/><mml:mn>110</mml:mn></mml:mmultiscripts></mml:math>and Its Implications for the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi>Sn</mml:mi><mml:mprescripts/><mml:none/><mml:mn>100</mml:mn></mml:mmultiscripts></mml:math>Shell Closure

J. CederkällPH Department, CERN 1211, Geneva 23, SwitzerlandA. EkströmPhysics Department, University of Lund, SwedenC. FahlanderPhysics Department, University of Lund, SwedenA. M. HurstOliver Lodge Laboratory, University of Liverpool, United KingdomM. Hjorth‐JensenPhysics Department and Center of Mathematics for Applications, University of Oslo, NorwayF. AmesTRIUMF, Vancouver, CanadaA. BanuGesellschaft für Schwerionenforschung (GSI), Darmstadt, GermanyP. A. ButlerOliver Lodge Laboratory, University of Liverpool, United KingdomT. DavinsonU. Datta PramanikSaha Institute of Nuclear Physics, Kolkata 700064, IndiaJ. EberthInstitute of Nuclear Physics, University of Cologne, GermanyS. FranchooIPN Orsay, Orsay, FranceG. GeorgievPH Department, CERN 1211, Geneva 23, SwitzerlandM. GórskaGesellschaft für Schwerionenforschung (GSI), Darmstadt, GermanyD. HabsPhysics Department, Ludwig-Maximilian University, Munich, GermanyM. HuýseInstituut voor Kern- en Stralingsfysica, K.U. Leuven, BelgiumO. IvanovInstituut voor Kern- en Stralingsfysica, K.U. Leuven, BelgiumJ. IwanickiHeavy Ion Laboratory, Warsaw University, PolandO. KesterGesellschaft für Schwerionenforschung (GSI), Darmstadt, GermanyU. KösterPH Department, CERN 1211, Geneva 23, SwitzerlandB. A. MarshAB Department, CERN 1211, Geneva 23, SwitzerlandO. NiedermaierMax-Planck Institute of Nuclear Physics, Heidelberg, GermanyT. NilssonFundamental Physics, Chalmers University of Technology, Gothenburg, SwedenP. ReiterInstitute of Nuclear Physics, University of Cologne, GermanyH. ScheitMax-Planck Institute of Nuclear Physics, Heidelberg, GermanyD. SchwalmMax-Planck Institute of Nuclear Physics, Heidelberg, GermanyT. SieberMax-Planck Institute of Nuclear Physics, Heidelberg, GermanyG. SlettenPhysics Department, University of Copenhagen, DenmarkI. ŞtefânescuInstituut voor Kern- en Stralingsfysica, K.U. Leuven, BelgiumJ. Van de WalleInstituut voor Kern- en Stralingsfysica, K.U. Leuven, BelgiumP. Van DuppenInstituut voor Kern- en Stralingsfysica, K.U. Leuven, BelgiumN. WarrInstitute of Nuclear Physics, University of Cologne, GermanyD. WeißhaarInstitute of Nuclear Physics, University of Cologne, GermanyF. WenanderAB Department, CERN 1211, Geneva 23, Switzerland

2007lv

ABI

Аннотация

The first excited ${2}^{+}$ state of the unstable isotope $^{110}\mathrm{Sn}$ has been studied in safe Coulomb excitation at $2.82\text{ }\text{ }\mathrm{MeV}/u$ using the MINIBALL array at the REX-ISOLDE post accelerator at CERN. This is the first measurement of the reduced transition probability of this state using this method for a neutron deficient Sn isotope. The strength of the approach lies in the excellent peak-to-background ratio that is achieved. The extracted reduced transition probability, $B(E2:{0}^{+}\ensuremath{\rightarrow}{2}^{+})=0.220\ifmmode\pm\else\textpm\fi{}0.022{e}^{2}{b}^{2}$, strengthens the observation of the evolution of the $B(E2)$ values of neutron deficient Sn isotopes that was observed recently in intermediate-energy Coulomb excitation of $^{108}\mathrm{Sn}$. It implies that the trend of these reduced transition probabilities in the even-even Sn isotopes is not symmetric with respect to the midshell mass number $A=116$ as $^{100}\mathrm{Sn}$ is approached.

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Идентификаторы

DOI: 10.1103/physrevlett.98.172501

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Цитирований: 3Использованных источников: 0

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