Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1831725 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2007 | 8 Pages |
Abstract
New optical system with an optical displacement sensor has been developed to measure the local thickness of CR-39 track detector. It can be applied to measure locally the thicknesses of whole detector area for making a map of the amount of bulk etch. The accuracy of the thicknesses measurement was found to be ±0.2μm using CR-39 detector. This accuracy is one order of magnitude higher than that of conventional methods, such as the Micrometer method, and is comparable to that of track size measurement under the optical microscope. It will also greatly improve the charge and mass resolutions of CR-39 detector that we can apply to measure galactic cosmic rays (GCRs) nuclei, especially the trans-iron nuclei (Z⩾30)(Z⩾30) in GCRs.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
S. Kodaira, N. Yasuda, N. Hasebe, T. Doke, S. Ota, K. Ogura,