Breakdown of vibrational structure in $^{98}\mathrm{Ru}$

Breakdown of vibrational structure in ${}^{98}{Ru}$

R. B. Cakirli, R. F. Casten, E. A. McCutchan, H. Ai, H. Amro, M. Babilon, C. W. Beausang, A. Heinz, R. O. Hughes, D. A. Meyer, C. Plettner, J. J. Ressler, and N. V. Zamfir

Phys. Rev. C 70, 044312 – Published 20 October 2004

Abstract

The nucleus ${}^{98}{Ru}$ , the lightest collective $Ru$ isotope with $N > 50$ , has been studied employing the $(α, 2 n)$ reaction using YRAST Ball detectors. The new data, as well as a systematic set of limits on the intensities of unobserved transitions, reveal a structure that resembles a near harmonic vibrator spectrum up through the two-phonon triplet but show an almost complete breakdown of vibrator structure thereafter. These results are not understood theoretically and are at variance with previous interpretations of this nucleus. A rare anomaly in yrast $B (E 2)$ values is also pointed out.

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Received 28 April 2004

DOI:https://doi.org/10.1103/PhysRevC.70.044312

Authors & Affiliations

R. B. Cakirli^1,2, R. F. Casten^1,3, E. A. McCutchan¹, H. Ai¹, H. Amro¹, M. Babilon^1,4, C. W. Beausang¹, A. Heinz¹, R. O. Hughes^1,5, D. A. Meyer¹, C. Plettner¹, J. J. Ressler¹, and N. V. Zamfir¹

¹Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520-8124, USA
²Istanbul University, Department of Physics, Turkey
³Institut für Kernphysik, Universität zu Köln, Köln, Germany
⁴Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
⁵Department of Physics, University of Surrey, Guildford, GU2 7XH United Kingdom

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Vol. 70, Iss. 4 — October 2004

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Physical Review C

covering nuclear physics

Breakdown of vibrational structure in ${}^{98}{Ru}$

R. B. Cakirli, R. F. Casten, E. A. McCutchan, H. Ai, H. Amro, M. Babilon, C. W. Beausang, A. Heinz, R. O. Hughes, D. A. Meyer, C. Plettner, J. J. Ressler, and N. V. Zamfir

Phys. Rev. C 70, 044312 – Published 20 October 2004

Abstract

Authors & Affiliations

Article Text (Subscription Required)

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Physical Review C

covering nuclear physics

Breakdown of vibrational structure in Ru98

R. B. Cakirli, R. F. Casten, E. A. McCutchan, H. Ai, H. Amro, M. Babilon, C. W. Beausang, A. Heinz, R. O. Hughes, D. A. Meyer, C. Plettner, J. J. Ressler, and N. V. Zamfir

Phys. Rev. C 70, 044312 – Published 20 October 2004

Abstract

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Breakdown of vibrational structure in ${}^{98}{Ru}$