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材料加工激光器的X射线发射

X-RAY EMISSION FROM MATERIALS PROCESSING LASERS.

作者信息

Behrens R, Pullner B, Reginatto M

机构信息

Physikalisch-Technische Bundesanstalt, Bundesallee 100, D-38116 Braunschweig, Germany.

出版信息

Radiat Prot Dosimetry. 2019 May 1;183(3):361-374. doi: 10.1093/rpd/ncy126.

DOI:10.1093/rpd/ncy126
PMID:30215786
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6543886/
Abstract

The emission of laser induced X-rays from materials processing ultra-short pulsed laser systems was measured. The absolute spectral photon fluence was determined using a thermoluminescence detector based few-channel spectrometer. The spectra at 10 cm from the laser focus were in the energy region between 2 and 25 keV with mean energies of ~4-6 keV (when weighted by fluence or directional dose equivalent) and up to 13 keV (when weighted by ambient dose equivalent). The operational quantities, H·'(0.07), H·'(3) and H·*(10), were determined to be in the order of 1600-7300, 16-71 and 1-4 mSv per hour processing time, respectively, depending on the material and condition of the workpiece. The dose contribution due to photons above 30 keV was for all quantities negligible, i.e. below 10-3.

摘要

对材料加工超短脉冲激光系统中激光诱导X射线的发射进行了测量。使用基于热释光探测器的多通道光谱仪确定了绝对光谱光子注量。距激光焦点10厘米处的光谱能量范围在2至25keV之间，平均能量约为4 - 6keV（按注量或定向剂量当量加权时），最高可达13keV（按环境剂量当量加权时）。根据工件的材料和条件，运行量H·'(0.07)、H·'(3)和H·*(10)分别确定为每小时加工时间约1600 - 7300、16 - 71和1 - 4毫希沃特。对于所有量而言，能量高于30keV的光子的剂量贡献可忽略不计，即低于10 - 3。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/3120d5f81060/ncy126f11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/2ab2037cef62/ncy126f01.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/b4a242c64dd0/ncy126f03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/619e410ba559/ncy126f04.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/aec2562f7668/ncy126f05.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/0a15eef1d8b0/ncy126f06.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/88cf31897a90/ncy126f07.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/0a34da0e6689/ncy126f08.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/7936b224bb75/ncy126f09.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/6d8581311e73/ncy126f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/3120d5f81060/ncy126f11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/2ab2037cef62/ncy126f01.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/e6dd46251239/ncy126f02.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/b4a242c64dd0/ncy126f03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/619e410ba559/ncy126f04.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/aec2562f7668/ncy126f05.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/0a15eef1d8b0/ncy126f06.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/88cf31897a90/ncy126f07.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/0a34da0e6689/ncy126f08.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/7936b224bb75/ncy126f09.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/6d8581311e73/ncy126f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e9d4/6543886/3120d5f81060/ncy126f11.jpg

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