Research Project
Grant-in-Aid for Scientific Research (B)
Radiative emission of neutrino pair (RENP) from atoms or molecules has been considered a novel tool to determine the yet unknown neutrino parameters. In order for a future RENP experiment, (1) we proceeded detail study of macro-coherent amplification mechanism for developing an experimental method to control higher order process of quantum electrodynamics such as two-photon paired superradiance or multiphoton emission; (2) search the best target that has high-density and long coherence time for RENP process. We have succeeded to enhance the emission rate to 18 orders of magnitude in the two-photon emission process by optimizing the experimental parameters. Also we have observed automatic development of coherence in the solid parahydrogen crystal. The coherence seems to increase 10 times longer time duration than the input pulse duration. We developed the excitation laser for Xe gas, which is a suitable candidate for the RENP experiment.
All 2018 2017 2016 2015 Other
All Journal Article (9 results) (of which Int'l Joint Research: 1 results, Peer Reviewed: 9 results, Open Access: 4 results, Acknowledgement Compliant: 3 results) Presentation (21 results) (of which Int'l Joint Research: 7 results) Remarks (2 results)
Journal of Physics B: Atomic, Molecular and Optical Physics
Volume: 51 Issue: 1 Pages: 015401-015401
10.1088/1361-6455/aa9782
PHYSICAL REVIEW A
Volume: 96 Issue: 6 Pages: 063827-063827
10.1103/physreva.96.063827
120006382538
Physical Review D
Volume: 96 Issue: 11 Pages: 1-7
10.1103/physrevd.96.113005
The Journal of Physical Chemistry A
Volume: 121 Issue: 20 Pages: 3943-3951
10.1021/acs.jpca.7b02011
Jpn. J. Appl. Phys.
Volume: 56 Issue: 3 Pages: 032101-032101
10.7567/jjap.56.032101
210000147462
J. Phys. Soc. Jpn.
Volume: 85 Issue: 3 Pages: 034301-034301
10.7566/jpsj.85.034301
Journal of Physics: Conference Series
Volume: 718 Pages: 062043-062043
10.1088/1742-6596/718/6/062043
Prog. Theor. Exp. Phys.
Volume: 081C01 Issue: 8 Pages: 081C01-081C01
10.1093/ptep/ptv103
Volume: 053B06 Issue: 5 Pages: 53B06-0
10.1093/ptep/ptv064
http://www.xqw.okayama-u.ac.jp
http://www.xqw.okayama-u.ac.jp/