X-ray Emission Hazards from Ultrashort Pulsed Laser Material Processing in an Industrial Setting

X-ray Emission Hazards from Ultrashort Pulsed Laser Material Processing in an Industrial Setting

Interactions between ultrashort laser pulses with intensities larger than 1013 W/cm2 and solids during material processing can lead to the emission of X-rays with photon energies above 5 keV, causing radiation hazards to operators. A framework for inspecting X-ray emission hazards during laser mater...

Full description

Saved in:
Bibliographic Details
Published in:Materials 2021-11, Vol.14 (23), p.7163
Main Authors: Stolzenberg, Ulf, Schmitt Rahner, Mayka, Pullner, Björn, Legall, Herbert, Bonse, Jörn, Kluge, Michael, Ortner, Andreas, Hoppe, Bernd, Krüger, Jörg
Format: Article
Language:eng
Subjects:
Ablation
Aluminum
ambient dose rate
Dosage
Emission
Feasibility studies
industrial applications
Inspections
Lasers
Photons
Plasma
Process parameters
protection housing
Radiation
Radiation hazards
Radiation protection
ultrashort pulsed laser
Ultrashort pulsed lasers
X-ray emission hazards
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Interactions between ultrashort laser pulses with intensities larger than 1013 W/cm2 and solids during material processing can lead to the emission of X-rays with photon energies above 5 keV, causing radiation hazards to operators. A framework for inspecting X-ray emission hazards during laser material processing has yet to be developed. One requirement for conducting radiation protection inspections is using a reference scenario, i.e., laser settings and process parameters that will lead to an almost constant and high level of X-ray emissions. To study the feasibility of setting up a reference scenario in practice, ambient dose rates and photon energies were measured using traceable measurement equipment in an industrial setting at SCHOTT AG. Ultrashort pulsed (USP) lasers with a maximum average power of 220 W provided the opportunity to measure X-ray emissions at laser peak intensities of up to 3.3 × 1015 W/cm2 at pulse durations of ~1 ps. The results indicate that increasing the laser peak intensity is insufficient to generate high dose rates. The investigations were affected by various constraints which prevented measuring high ambient dose rates. In this work, a list of issues which may be encountered when performing measurements at USP-laser machines in industrial settings is identified.
ISSN:1996-1944
1996-1944