Development of multilayer neutron interferometer for measurement of gravitationally induced phase

2014 Fiscal Year Final Research Report

• Project/Area Number: 24684018
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: The Institute of Physical and Chemical Research
• Principal Investigator: SEKI Yoshichika 独立行政法人理化学研究所, 光量子工学研究領域, 特別研究員 (90585209)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 中性子 / 干渉計

Outline of Final Research Achievements

We have advanced the multilayer neutron interferometer for the measurement of COW phase induced in the neutron wave function by gravitational interaction between the neutron and the Earth. For the phase stability, the rigidity of mounting mechanism for the beam splitters has been improved and the feedback mechanism for guiding magnetic field has been introduced. For utilization of white beam, it has been shown that we should use not just supermirrors but multi-colored mirrors to avoid phase dispersion in mirrors. We also have evaluated the possibility of the detection of phases induced by general-relativistic effects.

Free Research Field

中性子光学