14th OMEG Journal Club

Friday Mar 3, 2023, 4:00 PM → 5:30 PM Asia/Seoul

Baird hall 324

Jubin Park (OMEG & Soongsil University)

14th OMEG JC Date :
Friday, March 3, 2023
(2023년 3월 3일 금요일)

Meeting Place :
Physics meida room(324) @ Baird Hall
(물리학과 멀티미디어실(324) @ 베어드홀)

Schedule :
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16:00  - 16:40     : 1. Jun Young, Moon (Ph. D)
16:40  - 16:50     : Q & A
16:50  - 17:00     : Coffee Break
17:00  - 17:40     : 2. Sung Jong, Park (Ph. D)
17:40  - 17:50     : Q & A
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1.
Speaker: Jun Young, Moon (Ph. D)
Affiliation: Research fellow, Rare isotope science project (RISP), Institute for basic science  

Title: 

Nuclear physics study using Atomic physics technique:
Precision mass measurement with a multi-reflection time-of-flight spectrometer (MRTOF-MS) at RAON

Abstract:
An atomic nucleus comprises multiple nucleons combined by nuclear force between them. The interaction, quantified by the binding energy, is relatively uncertain but can be studied through the precise measurement of atomic mass since the electron binding energy and the uncertainty of nucleon mass is negligibly small. From the compiled atomic mass data, systematic studies of nucleon separation energy or two-nucleon separation energy are possible, which gives us insights into the evolution of nuclear shape and shell structure in the exotic region. In addition, it is well known that in nucleosynthesis the mass information plays a critical role, especially in the waiting points. In this talk, starting with nuclear physical perspective of precise mass measurement, mass spectrometry including a brief history of the methodology will be introduced using the cutting-edge tech, multi-reflection time-of-flight mass spectrometry (MRTOF-MS). And it will be ended with sharing the current status of the MRTOF-MS apparatus in RAON, which has been just installed in ISOL beamline.

2.
Speaker: Sung Jong, Park (Ph. D)
Affiliation: Rare Isotope Science Project, Institute for Basic Science

Title: 

Nuclear physics study using Atomic physics technique: Laser applications at RAON
 
Abstract:
Laser technology and high-precision measurement techniques based on atomic physics have been successfully and widely applied in a number of on-line isotope separator facilities. In particular, laser technology plays a very important role in the rare isotope (RI) beam production as well as the development of various application systems at the Rare Isotope science Project in IBS. The laser ion source, Resonant Ionization Laser Ion Source (RILIS), is an element selective efficient and versatile tool for generation of pure RI beams. The laser spectroscopy system, Collinear Laser Spectroscopy (CLS), provides fast, sensitive, and accurate means for the determination of nuclear ground state properties via optical isotope shift and hyperfine structure measurements. In this talk, the current status and future prospects of RILIS and CLS systems will be shortly introduced.
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