ELFT HÍRADÓ

[Szeminárium koordinátor <sem-admin AT szfki.hu>]

SZFI SeminarKunioki MimaELI-Beam-Line, Czech Republic (host: Földes 
István)Researches on Laser Ion Acceleration and Laser Driven Neutron Source 
for Nuclear Resonance Analysis at ILE Osaka UniversityMonday, 17 October 
2022, 10:30, KFKI Campus, Bldg. 1, 2nd floor, Conference RoomSince the early 
1990s, various schemes of laser ion acceleration (LIA) have been investigated 
as one of the applications of the intense short-pulse-laser interaction with 
plasmas [1]. The LIA has been applied to make a neutron source. In this 
seminar, I overview the LIA research, the development of the laser-driven 
neutron source (LDNS) [2] and the nuclear resonance absorption (NRA) imaging 
[3] at ILE, Osaka.The LDNS is unique because the number of neutrons per 
micropulse is very large, and the source size and the pulse width are small. 
Therefore, extensive research and development of LDNS are going on in the 
world. An LDNS by the LIA 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), and the unique application of LDNS, 
such as nuclear resonance absorption (NRA) imaging, is presented. 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 NRA 
imagingwith 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 7 Li(p,n)7 Be 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. Mirfayzi1 , P. McKenna5 , K. Naughton1 
, D. Neely2 , P. Norreys2,6 , C. Peth3 , H. Powell, J. A. Ruiz, J. Swain, O. 
Willi and M. Borghesi, “Beamed neutron emissiondriven 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. Minden érdeklődőt szívesen látunk! - Everyone is 
welcome to attend.Attila Nagysem-admin AT szfki.hu