105 citations · 198 across the 9 of their papers we have counts for
9 papers
Axion Search with Q & A Experiment
Hsien-Hao Mei, Wei-Tou Ni, Sheng-Jui Chen +1
Dark matter is a focused issue in galactic evolution and cosmology. Axion is a viable particle candidate for dark matter. Its interaction with photon is an effective way to detect…
The status and prospects of the Q & A experiment with some applications
Hsien-Hao Mei, Wei-Tou Ni, Sheng-Jui Chen +1
Motivated to measure the QED birefringence and to detect pseudoscalar-photon interaction, we started to build up the Q & A experiment (QED [Quantum Electrodynamics] and Axion exper…
Measurement of the Cotton-Mouton effect in nitrogen, oxygen, carbon dioxide, argon, and krypton with the Q & A apparatus
Hsien-Hao Mei, Wei-Tou Ni, Sheng-Jui Chen +1
Experiments for vacuum birefringence and vacuum dichroism have been set up with high-finesse high magnetic experimental apparatuses, which seem to be ideal for small gaseous Cotton…
Nanonewton force generation and detection based on a sensitive torsion pendulum
Sheng-Jui Chen, Sheau-Shi Pan
In this paper, we introduce the experiment based on a sensitive torsion pendulum for measuring and calibrating small forces at nanonewton scale. The force standard for calibration…
Q & A Experiment to Search for Vacuum Dichroism, Pseudoscalar-Photon Interaction and Millicharged Fermions
Sheng-Jui Chen, Hsien-Hao Mei, Wei-Tou Ni
A number of experiments are underway to detect vacuum birefringence and dichroism -- PVLAS, Q & A, and BMV. Recently, PVLAS experiment has observed optical rotation in vacuum by a…
Ellipsometry noise spectrum, suspension transfer function measurement and closed-loop control of the suspension system in the Q & A experiment
Sheng-Jui Chen, Hsien-Hao Mei, Wei-Tou Ni
The Q & A experiment, aiming at the detection of vacuum birefringence predicted by quantum electrodynamics, consists mainly of a suspended 3.5 m Fabry-Perot cavity, a rotating perm…