Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session L10: Nuclear Structure V
9:00 AM–11:30 AM,
Friday, December 1, 2023
Hilton Waikoloa Village
Room: Kohala 3
Chair: Nori Aoi
Abstract: L10.00001 : Precision Spectroscopy of Fast, Hot Exotic Isotopes for Nuclear Structure
9:00 AM–9:15 AM
Presenter:
Silviu-Marian Udrescu
(Massachusetts Institute of Technology)
Author:
Silviu-Marian Udrescu
(Massachusetts Institute of Technology)
The key idea is based on performing a stepwise resonant ionization process, inside an electric field and with the ionization step laser in a direction perpendicular to the trajectory of the atomic beam. This will allow a very localized interaction region (<5 mm diameter) from which the electrons can be extracted and detected. Thus, an electron-ion coincidence can be achieved, which will substantially reduce the measurements background, while allowing the time and position information of the resulting ions and electrons to be extracted. A Doppler correction can then be applied to the atoms on an event-by-event basis, facilitating precise measurements of the transitions of interests, regardless of the initial energy distribution and spread of the initial beam. With our proposed method we will be able to study, with high precision and sensitivity, the nuclear properties of very short-lived isotopes and isomers (lifetimes < 1 ms) produced in very small amounts (< 1 ion/s), which can’t be investigated spectroscopically with existing experimental methods. The current status of the proposed experiment, preliminary results obtained on stable isotopes, as well as future research directions will be discussed.
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