ELFT HÍRADÓ

[<vera.horvath AT eli-alps.hu>]

Előadó:              Kunioki Mima (ELI BL, Czech Republic - on leave from
Institute of Laser Engineering, Osaka University, Japan)
Cím:                   Researches on Laser Ion Acceleration and Laser Driven
Neutron Source for Nuclear Resonance Analysis at ILE Osaka University

Időpont:              2022. október 18., 10:15
Helyszín:             ELI ALPS konferenciaterme (Szeged, Wolfgang Sandner utca
3.)

Absztrakt:
I start with brief introduction of the present status of Institute Laser
Engineering (ILE) of Osaka University. Then, the topics on Laser Driven Ion
Acceleration (LDIA) and Laser Driven Neutron Source (LDNS) researches at ILE
are presented. Since early 1990’s, various schemes of LDIA are investigated as
one of the applications of the intense short-pulse-laser interaction with
plasmas [1]. The LDIA has been applied for radiography, medical application,
neutron source and so on. In this seminar, I overview the researches at ILE
Osaka Univ. on LDIA, laser driven neutron source (LDNS) [2]and its application
to nuclear resonance absorption (NRA) [3] .
The LDNS is unique because the number of neutrons per micro pulse is very
large and the source size and the pulse width are small. Therefore, the
extensive research and development of LDNS are going on in the world. A scheme
of LDNS (Pitcher- catcher) by the LDIA is described, which is the Pitcher-
Catcher Scheme (PCS). The characteristics of the LDNS by PCS are compared with
those of the accelerator driven neutron source (ADNS). Then, I explain a
unique application of LDNS such as the nuclear resonance absorption (NRA)
imaging. Namely, by the LDNS, the NRA imaging is possible with a relatively
short beam line in comparison with that of the ADNS, since the neutron pulse
width and the source size of LDNS are small. The future prospect of the R&D of
the NRA imaging with LDNS [4] is also discussed.
[1] A. Macchi, P.59-P.92, Chap.5 Laser Driven Ion Acceleration, “Application
of Laser-Driven Particle Acceleration”, Edited by P.R. Bolton, K. Parodi, and
J. Schreiber, CRC press, Taylor & Francis Group, 2018, (M. Borghesi will
present this topic on LDIA in this seminar.)
[2] Lancaster, K.L., Karsch, S., Habara, H., et al., Characterization of
7Li(p,n)7Be neutron yields from laser produced ion beams for fast neutron
radiography, Physics of Plasmas, 11.3404(2004)
[3] S. Kar, A. Green, H. Ahmed, A. Alejo, A.P.L. Robinson, M. Cerchez, R.
Clarke, D. Doria, S. Dorkings, J. Fernandez, S.R. Mirfayzi, P. McKenna, K.
Naughton, D. Neely, P. Norreys, C. Peth, H. Powell, J. A. Ruiz, J. Swain, O.
Willi and M. Borghesi, “Beamed neutron emission driven by laser accelerated
light ions” New J. Phys. 18, 053002 (2016).
[4] A.Yogo, et al., “Laser-driven neutron generation realizing single-shot
resonance Spectroscopy”, to be published in PRX, 2022.

A szeminárium angol nyelvű. Minden érdeklődőt szívesen látunk.

Horváth Vera