Testing the mutually enhanced magicity effect in nuclear incompressibility via the giant monopole resonance in the 204,206,208Pb isotopes

D. Patel, U. Garg, M. Fujiwara, T. Adachi, H. Akimune, G. P.A. Berg, M. N. Harakeh, M. Itoh, C. Iwamoto, A. Long, J. T. Matta, T. Murakami, A. Okamoto, K. Sault, R. Talwar, M. Uchida, M. Yosoi

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Abstract

Using inelastic α-scattering at extremely forward angles, including 0°, the strength distributions of the isoscalar giant monopole resonance (ISGMR) have been measured in the 204,206,208Pb isotopes in order to examine the proposed mutually enhanced magicity (MEM) effect on the nuclear incompressibility. The MEM effect had been suggested as a likely explanation of the "softness" of nuclear incompressibility observed in the ISGMR measurements in the Sn and Cd isotopes. Our experimental results rule out any manifestation of the MEM effect in nuclear incompressibility and leave the question of the softness of the open-shell nuclei unresolved still.

Original languageEnglish
Pages (from-to)178-181
Number of pages4
JournalPhysics Letters B
Volume726
Issue number1-3
DOIs
StatePublished - 2013
Externally publishedYes

Funding

We acknowledge the effort of the RCNP staff in providing high-quality α beams required for the present measurements. This work has been supported in part by the National Science Foundation (Grant Nos. PHY07-58100 and PHY-1068192 ).

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