Laser-driven γ-ray, positron, and neutron source from ultra-intense laser-matter interactions

2015 ◽  
Vol 22 (8) ◽  
pp. 083113 ◽  
Author(s):  
Tatsufumi Nakamura ◽  
Takehito Hayakawa
Keyword(s):  
2021 ◽  
Vol 28 (2) ◽  
pp. 023110
Author(s):  
Liang-qi Zhang ◽  
Shao-dong Wu ◽  
Hai-rong Huang ◽  
Hao-yang Lan ◽  
Wei-yuan Liu ◽  
...  

2017 ◽  
Vol 12 (08) ◽  
pp. P08005-P08005 ◽  
Author(s):  
G. Festa ◽  
C. Andreani ◽  
L. Arcidiacono ◽  
G. Burca ◽  
W. Kockelmann ◽  
...  

2021 ◽  
Author(s):  
Aynisa Tursun ◽  
Mamat Ali Bake ◽  
Baisong Xie ◽  
Yasheng Niyazi ◽  
Abuduresuli Abudurexiti

2018 ◽  
Vol 193 ◽  
pp. 04010
Author(s):  
Jonathan Wilson ◽  
Matthieu Lebois ◽  
Liqiang Qi

We have recently successfully demonstrated a new technique for production and study of many of the most exotic neutron-rich nuclei at moderate spins. LICORNE, a newly developed directional inversekinematic fast neutron source at the ALTO facility of the IPN Orsay, was coupled to the MINIBALL γ-ray spectrometer to study very neutron rich nuclei using the 238U(n,f) reaction. This reaction and 232Th(n,f), are the most neutron-rich fission production mechanisms achievable and can be used to simultaneously populate hundreds of neutron-rich nuclei up to spins of ~16h. High selectivity in the experiment was achieved via triple γ-ray coincidences and the use of a 400 ns period pulsed neutron beam, a technique which is unavailable to other reaction mechanisms such as spontaneous fission. The pulsing allows time correlations to be exploited to separate delayed γ rays from isomeric states and supresses unwanted γ-rays from beta decay. In Autumn 2017, the ν-ball array will be operational at the ALTO facility of the IPN Orsay. This high efficiency hybrid Ge-LaBr3 spectrometer based around 24 clover Ge detectors, 10 co-axial Ge detectors and 20 LaBr3 scintillators will help to further refine the technique and achieve a large increase in the current observational limit.


2021 ◽  
Author(s):  
Yoshitaka Mori ◽  
Katsuhiro Ishii ◽  
Ryohei Hanayama ◽  
Shinichiro Okihara ◽  
Yoneyoshi Kitagawa ◽  
...  

Abstract Laser Inertial Fusion Energy reactor requires repetitive fuel pellet injection and laser engagement to fuse fusion fuel beyond a few Hz. We demonstrate 10 Hz free-fall bead pellets injection and laser engagement with γ-ray generation. Diameter of 1 mm deuterated polystyrene beads were engaged by counter illuminating ultra-intense laser pulses with intensity of 5 x1017 W/cm2 at 10 Hz. The spatial distribution of free-fall beads was 0.86 mm in horizontal, and 0.18 mm in vertical. The system operated beyond 5 minute, 3500 beads supply with achieved frequencies of 2.1 Hz for illumination on bead and 0.7 Hz for γ-ray generation, these frequencies increments three times in relation to the previous 1 Hz injection system. The operation duration was limited by pellet supply. This injection and engagement system can apply for Laser Inertial Fusion Energy research platform.


Author(s):  
R. B. Galloway
Keyword(s):  

SynopsisNemilov and Pisarevskii (1957) have reported a 390 keV γ-ray in coincidence with neutrons from a Po-Li source, and interpret this as evidence for a level in B10 at 390 keV. A search for confirmatory evidence of this γ–ray has been unsuccessful, and it is estimated that such n–γ coincidences would have been detected in the experiment here described if they involved 8 per cent or more of the neutrons from the Po-Li source.


Author(s):  
C. J. Joachain ◽  
N. J. Kylstra ◽  
R. M. Potvliege

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