Low-Lying Excited States in ^<213>Rn and ^<215>Ra

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概要

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• Gamma rays from low-lying levels in "'Rn and "'Ra have been studied followingthe "'Pb('Be, 4n)"'Rn and "'Pb("C, 3n)"'Ra reactions. Spins and parities were deter-mined by means of the measurements of 7 ray angular distributions, linear polariza-lions and lifetimes. Enhanced E3 transitions have been observed between the groundand the first excited state. The enhancements were as high as 38:5 for "'Rn and34*2 for "'Ra in Weisskopf unit. The enhancement is qualitatively explained by theparticle-vibration coupling model. Cascade [3 transitions have been observed in bothnuclei. The role of the two-phonon octupole vibration has been examined in relationto these cascade E3 transitions.NUCLEAR REACTIONS "'Pb('Be,4n), A=31-57 MeV; "'Pb("C,3n),E=63-75 MeV; measured E, I,(0), o(E, E,), y7-coin, y - y(t), pulsed-beam-7timing, linear polarization (7), Ge(Li) detectors, enriched target. "'Rn and "'Radeduced levels, J, n, T.7., #([3), particle-vibration coupling model.

• 社団法人日本物理学会の論文
• 1988-09-15

著者

• Komatsubara T

  東北大院理

• Sakai Eiko

  九州大学 歯学部小児口腔医学

• Sakai H

  Osaka Univ. Osaka

• Aoki T

  Univ. Tsukuba Ibaraki Jpn

• Kuwai Tomohiko

  Department Of Physics University Of Toyama

• Kinoshita Toyohiko

  Institute For Solid State Physics University Of Tokyo

• Sakamoto Hironori

  Department Of Material Physics Faculty Of Engineering Science Osaka University

• Aoki T

  Gunma National College Of Technology

• Kamada Toru

  Department Of Physics Faculty Of Science Tokyo Metropolitan University

• Sakamoto H

  Department Of Material Physics Faculty Of Engineering Science Osaka University

• FUKUCHI Yasuhiko

  Institute of Physics,University of Tsukuba

• KOMATSUBARA Tetsuro

  Institute of Physics,University of Tsukuba

• SAKAMOTO Hideo

  Institute of Physics,University of Tsukuba

• AOKI Takayoshi

  Institute of Physics,University of Tsukuba

• FURUNO Kohei

  Institute of Physics,University of Tsukuba

• Koide Tsuneharu

  Department Of Physics Faculty Of Science The University Of Tokyo:photon Factory National Laboratory

• Sakamoto H

  Santen Pharmaceutical Co. Ltd. Developmental Research Division

• Furuno K

  Univ. Tsukuba Ibaraki

• Furuno Kohei

  Institute Of Physics And Tandem Accelerator Center The University Of Tsukuba

• Fukuchi Y

  Univ. Tsukuba Ibaraki

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