低バックグラウンドGe検出器の遮蔽性能の改善
広島大学大学院工学研究科研究報告 Volume 53 Issue 1
Page 87-93
published_at 2004-12
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| File | |
| Title ( jpn ) |
低バックグラウンドGe検出器の遮蔽性能の改善
|
| Title ( eng ) |
Background Reduction of Low Level Gamma-Ray Spectrometer
|
| Creator |
Shizuma Kiyoshi
Yokohata Kenji
|
| Source Title |
広島大学大学院工学研究科研究報告
Graduate School of Engineering, Hiroshima University
|
| Volume | 53 |
| Issue | 1 |
| Start Page | 87 |
| End Page | 93 |
| Abstract |
A new low-background shielding was installed for a Ge detector. Background gamma-ray spectrum was measured and compared with that of old shielding to investigate how improved the background counting rate. Additional improvements for the new shielding was installed to reduce background counting rate. It has been shown that shielding of the neck part of Ge detector cryostat and concrete floor are effective to reduce background contribution. The reduction factor of ^<40>K 1461 keV gamma-ray was much improved from 51 of old shield to 4290 of new shield.
|
| Keywords |
Ge spectrometer
Shielding
Low-level radioactivity
Reduction factor
Background gamma ray
|
| NDC |
Mechanical engineering [ 530 ]
|
| Language |
jpn
|
| Resource Type | departmental bulletin paper |
| Publisher |
広島大学大学院工学研究科
国立情報学研究所
|
| Date of Issued | 2004-12 |
| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1347-7218
[NCID] AA11700032
|
