MTV-G experiment : probing a non-standard strong gravitational field at nuclear scale using geodetic precession

NEB 15 – Recent Developments in Gravity

Tanaka, Saki^1 ; Nakaya, Yusuke^1 ; Ninomiya, Kazufumi^1,2 ; Nishio, Hironori^1 ; Onishi, Junichi^1 ; Openshaw, Robert^3 ; Pearson, Matthew^3 ; Totsuka, Yumi^1 ; Murata, Jiro^1

Department of Physics, Rikkyo University, Nishi-Ikebukuro, Tokyo 171-8501, Japan^1

RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan^2

TRIUMF, Vancouver, BC 2A3, Canada^3

关键词: Electron spin precession;    Experimental techniques;    Extra dimensions;    Nuclear scattering;    Radioactive beams;    Search time;    Spin polarized electron sources;    Strong gravitational fields;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/453/1/012018/pdf
DOI  :  10.1088/1742-6596/453/1/012018

来源: IOP

【 摘 要 】

The MTV-G project has started in 2011 to explore a strong gravitational field around nuclei utilizing an experimental technique developed to search time reversal symmetry violation in nuclear beta decay experiment at a radioactive beam facility. A large electron spin-precession due to a possible strong gravitational field, which has been predicted by a large extra dimension model, is investigated in an electron-nuclear scattering experiment at TRIUMF. The experimental design, which use a spin polarized electron source and a Mott-spin analyzer, the commissioning experiment, the preliminary results, together with an introduction to the next generation device, are described in this article.