Other
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005omeg.conf..123i&link_type=abstract
ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2003. Held 17-19 November 2003 in RIKEN, Wako, Saitama, Japan. Edited by M Terasawa,
Other
Scientific paper
We, the Tokyo group, have performed some dark matter search experiments at an underground cell in the Kamioka Observatory (2700 m.w.e). Two cryogenic detectors, a 168-g lithium fluoride (LiF) bolometer and a 176-g sodium fluoride (NaF) bolometer, are aimed at the direct detection of nuclear recoils caused by elastic scattering of weakly interacting massive particles (WIMPs) through a spin-dependent interaction. The LiF bolometer run at Kamioka was performed from 2001 through 2002 with the total exposure of 4.1 kg days, and the NaF bolometer run was performed from 2002 through 2003 with the total exposure of 3.38 kg days. From these experiments, we derived limits on WIMP-nucleon couplings in the ap-an parameter plane which is complementary to other existing limits. We are also developing a direction-sensitive detector using organic crystal scintillator in order to sense the wind of WIMP dark matter. It exploits the anisotropic scintillation efficiency of organic crystals with respect to the direction of nuclear recoils relative to crystallographic axes. A variation of about 7% was observed in the scintillation efficiency of carbon recoils in a stilbene crystal for recoil energy of 30 keV to 1 MeV using neutrons from 7Li(p, n)7Be and 252Cf. We are now performing a pilot experiment at Kamioka to prove the feasibility of this method.
Inoue Yasunori
Minowa Makoto
Miuchi Kentaro
Sekiya Hiroyuki
Shimizu Yasuaki
No associations
LandOfFree
Current Status of Tokyo Dark Matter Experiment does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Current Status of Tokyo Dark Matter Experiment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current Status of Tokyo Dark Matter Experiment will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1466476