This is an announcement of a seminar by
Prof. Utsunomiya and Dr. Inakura on Sep. 26.
This seminar is jointly held by CNS and TNP Lab, RNC.
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Announcement of the CNS + RNC-TNP-Lab Seminar on Sep 26(Wed)
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Venue: Nishina Hall
Date: Sep. 26 (Wed) 13:30 - 16:30
* The talks will be given in English.
o Talk-1 (13:30 - 15:00: tentative)
Speaker: Prof. Hiroaki Utsunomiya (Konan University / CNS)
Title: Photonuclear reactions and related topics
- from PDR to nucleosynthesis
光核反応とその周辺～PDRから元素合成まで
Abstract:
Photoneutron cross section measurements played a vital role in the study of giant dipole resonance in nuclear physics in the 20th century and have revived in the study of nucleosynthesis in the beginning of the 21st century. I discuss nucleosynthesis of heavy (p-process, s-process) and light elements in nuclear astrophysics. Furthermore, I discuss the role of (γ,γ') reactions and Coulomb dissociation & excitation induced by virtual photons in the study of pygmy dipole resonance which has drawn much attention in nuclear physics as neutron-skin oscillation. Experiments can be carried out in Japan at the γ-ray beam facility NewSUBARU - GACKO, the radioactive ion beam facility RIBF - SAMURAI, and the proton beam facility RCNP Grand Raiden. Photonuclear reaction studies are heading to a flourishing era via the Duke-HIγS facility by the construction of the ELI-NP (Extreme Light Infrastructure -- Nuclear Physics), which has just begun under the European Commission in Bucharest, Romania.
o Talk-2 (15:00-16:30)
Speaker: Tsunenori Inakura (TNP Lab, RNC)
Title: Shell effect on pygmy dipole resonances
ピグミーE1共鳴への殻構造の影響
Abstract:
Low-energy E1 excitation, which is often called pygmy dipole resonance (PDR), is currently a topic of high interest. The properties of the PDR in neutron-rich nuclei are strongly affected by the existence of loosely bound nucleons and the appearance of neutron skin or halo. The PDR strength distribution is sensitive to nuclear properties at nuclear surface and at low density. Thus, observed properties of the PDR may provide us information on the neutron skin thickness and the neutron-matter equation of state. In this seminar, I show properties of the PDR such as emergence condition, correlation with skin thickness, transition density profile, and so on.
Contact persons: Koichi Sato (TNP Lab), Ken Yako (CNS)
Organised by: TNP Lab/CNS
