Application of a large-volume NaI scintillator to search for dark matter

Journal Article · Mon Feb 01 00:00:00 EST 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.47.R425· OSTI ID:5649213

Fushimi, K; Ejiri, H; Kinoshita, H; Kudomi, N; Kume, K; Nagata, K; Ohsumi, H; Okada, K; Sano, H; Tanaka, J ^[1]

---

1. Department of Physics, Osaka University, Toyonaka, Osaka 560 (Japan)

Application of a large-volume NaI scintillator to search for the cold dark matter (DM) in the Universe is discussed. A low-noise ([similar to]5 keV) and low-background ([similar to]5/keV kg day) were achieved even with a large (36.5 kg) NaI scintillator. Light output efficiencies for [sup 23]Na and [sup 127]I were measured as 0.4[plus minus]0.2 and 0.05[plus minus]0.02, in the recoil energy range of 5--100 keV and 40--300 keV, respectively. NaI is shown to have merits of a large volume, large scattering cross sections for dark matter, and of 100% abundance of finite-spin nucleus, but to have the demerits of a small form factor due to the finite-size effect of [sup 127]I at the presently measured energy region.

• OSTI ID: 5649213
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 47:2; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
NAI DETECTORS
COSMIC RAY DETECTION
NONLUMINOUS MATTER
COSMIC NEUTRINOS
RECOILS
SCATTERING
SCINTILLATION COUNTING
STOPPING POWER
COSMIC RADIATION
COUNTING TECHNIQUES
DETECTION
ELEMENTARY PARTICLES
FERMIONS
IONIZING RADIATIONS
LEPTONS
MASSLESS PARTICLES
MATTER
MEASURING INSTRUMENTS
NEUTRINOS
RADIATION DETECTION
RADIATION DETECTORS
RADIATIONS
SCINTILLATION COUNTERS
SOLID SCINTILLATION DETECTORS
440104* - Radiation Instrumentation- High Energy Physics Instrumentation