[Triumf-seminars] TRIUMF Special Seminar today at 09:00

[TRIUMF Seminars]

Date/Time: Tue 2022-08-02 at 09:00

Location:  virtual             

Speaker:   Simone Gargiulo (Ecole Polytechnique Federale de Lausanne (EPFL))

Title:     Stimulating Nuclear Excitations by means of electrons, muons and photons

Abstract: Wouldn't it be nice if we could store energy for a time comparable to the Universe's age and release it at our will? *********************************

That is what nuclear excitations are, in principle, capable of doing. Unfortunately, as humans we did not yet find a way to store and release energy on demand, efficiently exploiting excited nuclear levels. **********************************

Since the claimed observation in 2018, the Nuclear Excitation by Electron Capture (NEEC) process seemed an efficient way to deplete energy stored in isomers having a peculiar level scheme. Still, disagreement with state-of-the-art theory sparked a live debate about its nature. A recent rebuttal of the experiment showed no signature of the process. In a recent theoretical work, I explored the possibility that NEEC would take place in excited ions, a possibility previously disregarded and discuss how this could reduce the discrepancy. ***************************

In order to increase the excitation probability we recently proposed the possibility to excite the nucleus with the capture of a free muon, and we called the process NEmuC. As results, due to the higher interaction with the nucleus, excitation probabilities result to be much higher than in the NEEC scenario. *******************************

>From the experimental perspective, I will discuss the setup I designed for the observation of delayed nuclear gamma decay in an optical laser-generated plasma environment. ***********************

S. Gargiulo, I. Madan, F. Carbone, Phys Rev Lett 128 212502; S. Gargiulo, M.F. Gu, F. Carbone and I. Madan, arXiv:2202.11215; Y. Wu, S. Gargiulo, F. Carbone, C.H. Keitel, and A. Palffy Phys Rev Lett 128 162501; K. Akbari, S. Gargiulo, F. Carbone, J.G. d. Abajo, arXiv:2203.05990

***************************The speaker is a candidate for a TRINAT postdoctoral research associate position*************

https://us02web.zoom.us/j/87562416809?pwd=TzhqKzFRakI2VWY5OEJVUGJHL05Wdz09

 Meeting ID: 875 6241 6809  Passcode: 936514

The speaker is a candidate for a TRINAT postdoctoral research associate position

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