東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Measurement of the Surface and Under...

Langford, Thomas J.

FindBook

Google Book

Amazon

博客來

Measurement of the Surface and Underground Neutron Spectra with the UMD/NIST Fast Neutron Spectrometers.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Measurement of the Surface and Underground Neutron Spectra with the UMD/NIST Fast Neutron Spectrometers./
作者:	Langford, Thomas J.
面頁冊數:	319 p.
附註:	Source: Dissertation Abstracts International, Volume: 75-06(E), Section: B.
Contained By:	Dissertation Abstracts International75-06B(E).
標題:	Physics, Radiation. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3611818
ISBN:	9781303728983

Measurement of the Surface and Underground Neutron Spectra with the UMD/NIST Fast Neutron Spectrometers.
Langford, Thomas J.

Measurement of the Surface and Underground Neutron Spectra with the UMD/NIST Fast Neutron Spectrometers. - 319 p.

Source: Dissertation Abstracts International, Volume: 75-06(E), Section: B.

Thesis (Ph.D.)--University of Maryland, College Park, 2013.

This item must not be sold to any third party vendors.

The typical fast neutron detector falls into one of two categories, Bonner sphere spectrometers and liquid scintillator proton recoil detectors. These two detector types have traditionally been used to measure fast neutrons at the surface and in low background environments. The cosmogenic neutron spectrum and flux is an important parameter for a number of experimental efforts, including procurement of low background materials and the prediction of electronic device faults. Fast neutrons can also cause problems for underground low-background experiments, through material activation or signals that mimic rare events. Current detector technology is not sufficient to properly characterize these backgrounds.

ISBN: 9781303728983Subjects--Topical Terms:

1019212
Physics, Radiation.

Measurement of the Surface and Underground Neutron Spectra with the UMD/NIST Fast Neutron Spectrometers.
LDR:03027nmm a2200301 4500 001 2058161
005 20150630082852.5
008 170521s2013 ||||||||||||||||| ||eng d
020 $a 9781303728983
035 $a (MiAaPQ)AAI3611818
035 $a AAI3611818
040 $a MiAaPQ $c MiAaPQ
100 1 $a Langford, Thomas J. $3 3172089
245 1 0 $a Measurement of the Surface and Underground Neutron Spectra with the UMD/NIST Fast Neutron Spectrometers.
300 $a 319 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-06(E), Section: B.
500 $a Adviser: Elizabeth J. Beise.
502 $a Thesis (Ph.D.)--University of Maryland, College Park, 2013.
506 $a This item must not be sold to any third party vendors.
520 $a The typical fast neutron detector falls into one of two categories, Bonner sphere spectrometers and liquid scintillator proton recoil detectors. These two detector types have traditionally been used to measure fast neutrons at the surface and in low background environments. The cosmogenic neutron spectrum and flux is an important parameter for a number of experimental efforts, including procurement of low background materials and the prediction of electronic device faults. Fast neutrons can also cause problems for underground low-background experiments, through material activation or signals that mimic rare events. Current detector technology is not sufficient to properly characterize these backgrounds.
520 $a To this end, the University of Maryland and the National Institute of Standards and Technology designed, developed, and deployed two Fast Neutron Spectrometers (FaNS) comprised of plastic scintillator and 3He proportional counters. The detectors are based upon capture-gated spectroscopy, a technique that demands a delayed coincidence between a neutron scatter and the resulting neutron capture after thermalization. This technique provides both particle identification and knowledge that the detected neutron fully thermalized. This improves background rejection capabilities and energy resolution.
520 $a Presented are the design, development, and deployment of FaNS-1 and FaNS-2. Both detectors were characterized using standard fields at NIST, including calibrated 252Cf neutron sources and two monoenergetic neutron generators. Measurements of the surface fast neutron spectrum and flux have been made with both detectors, which are compared with previous measurements by traditional detectors. Additionally, FaNS-1 was deployed at the Kimballton Underground Research Facility (KURF) in Ripplemead, VA. A measurement of the fast neutron spectrum and flux at KURF is presented as well. FaNS-2 is currently installed in a shallow underground laboratory where it is measuring the muon-induced neutron flux and spectrum.
590 $a School code: 0117.
650 4 $a Physics, Radiation. $3 1019212
690 $a 0756
710 2 $a University of Maryland, College Park. $b Physics. $3 1266199
773 0 $t Dissertation Abstracts International $g 75-06B(E).
790 $a 0117
791 $a Ph.D.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3611818