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Past Events
Public Seminar of RPg Student:
Construction of Multi-reflection Time-of-Flight Mass Spectrograph and Nuclear Mass Measurement at A~100 region
| Speaker: | Mr. Wenduo XIAN |
| Affiliation: | The University of Hong Kong |
| Date: | April 15, 2020 (Wednesday) |
| Time: | 2:30 p.m. |
| Venue: | Rm 518, 5/F, Chong Yuet Ming Physics Building, HKU |
Abstract
Mass, as one of the most fundamental properties of matter, plays a very important role in research of nuclear structure and synthesis of heavy elements. Precise nuclear-mass data are highly desirable. However, measuring masses of exotic nuclei is very challenging as their very short lifetimes of milliseconds require very fast measurements with high efficiency. Therefore mass data of exotic nuclei is very scarce and inaccurate. Among mass measurement methods, the technique of Multi-Reflection Time-of-Flight Mass Spectrograph (MRTOF-MS) has recently achieved the proof-of-principle to overcome these challenges. Its mass resolving power can reach to 10^5 with measuring time as short as a few milliseconds. MRTOF-MS system is currently being developed at RIKEN facility aiming at precise mass measurements for A~100 nuclei which is the key region to understand the rp-process nucleosynthesis. In this talk, the design and working principles of MRTOF-MS, construction status and upcoming commissioning experiments will be presented.
Anyone interested is welcome to attend.