| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9844859 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2005 | 9 Pages |
Abstract
Cosmic-ray muon radiography has been studied as a potential method for the measurement of the internal structure of the active volcano Mt. West Iwate. We improved a cosmic-ray muon detection system built with a set of two position-sensitive segmented detectors by the multiplicity analysis of a soft-component background after passing through an Fe plate between the detectors. We measured the density of the region located 160Â m under the peak of Mt. Kurokura and compared to the gravimetric data. Cosmic-ray muons as a radiographic probe provide useful information that complements the gravimetric data. We analyzed the data to find time-dependent changes in the cosmic-ray muon intensity after passing through Mt. West Iwate, and a lower limit of 0.82% was found in Mt. Kurokura at the 90% CL. We discuss the possibility of cosmic-ray muon tomography with two or more detection systems.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
H.K.M. Tanaka, K. Nagamine, S.N. Nakamura, K. Ishida,