On-line monitoring of cyclotron target-gas output by means of tunable lead salt diode laser absorption spectroscopy

被引：7

作者：

Kasyutich, V. L. ^{[1
]}

McMahon, A. ^{[2
]}

Barnhart, T. ^{[2
]}

Martin, P. A. ^{[3
]}

机构：

[1] TDL Sensors Ltd, Core Technol Facil, Manchester M13 9NT, Lancs, England

[2] Univ Manchester, Wolfson Mol Imaging Ctr, Manchester M20 3LJ, Lancs, England

[3] Univ Manchester, Sch Chem Engn & Analyt Sci, Manchester M60 1QD, Lancs, England

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2008年 / 93卷 / 2-3期

关键词：

D O I：

10.1007/s00340-008-3222-0

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate what is, to our knowledge, the first use of mid-infrared laser absorption spectroscopy for trace-gas measurements of cyclotron target outputs used for the generation of radioactive carbon-11 in positron emission tomography (PET). The spectrometer was based upon a liquid-nitrogen-cooled lead salt diode laser generating single-mode radiation in the wavenumber range of 2230-2240 cm-1. The sample flowed to a multiple-pass optical cell with a total path length of 15.23 m and the laser radiation was detected by two liquid-nitrogen-cooled InSb photodetectors. We present the results of CO, N2O and CO2 measurements on PET trace cyclotron output and discuss future work on 11sCO and 11CO(2) detection.

引用

页码：701 / 711

页数：11

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