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NAIS: nuclear activation-based imaging spectroscopy.
M M Günther1, A Britz, R J Clarke
1Institut für Kernphysik, Schlossgartenstr. 9, Technische Universität Darmstadt, D-64289 Darmstadt, Germany. m.guenther@gsi.de
The Review of Scientific Instruments
|August 2, 2013
Summary
We developed a nuclear activation-based imaging spectroscopy (NAIS) method to characterize high-flux laser-accelerated proton beams. This novel technique overcomes saturation effects common in conventional detectors.
Area of Science:
- Nuclear physics
- Laser-driven particle acceleration
- Advanced detector systems
Background:
- High-power lasers achieve intensities >10^22 W/cm^2, generating high-flux, energetic particle beams.
- Conventional detectors (scintillators, semiconductors, films) face saturation issues with these intense beams.
- Characterizing laser-accelerated proton beams requires spatially and spectrally resolved imaging.
Purpose of the Study:
- To present a novel nuclear activation-based imaging spectroscopy (NAIS) method.
- To enable accurate characterization of laser-accelerated proton beams.
- To introduce an absolute calibration method for imaging plates (IPs).
Main Methods:
- Utilizing a detector system with stacked metal foils and imaging plates (IPs).
- Irradiating foils to induce nuclear reactions and gamma decay radiation.
- Performing autoradiography of activated foils with IPs and subsequent analysis for beam profiling.
Main Results:
- Achieved spectrally and spatially resolved beam profiles of laser-accelerated protons.
- Demonstrated the effectiveness of the NAIS method in high-flux beam characterization.
- Presented a validated absolute calibration method for IPs.
Conclusions:
- The NAIS method effectively overcomes saturation limitations of conventional detectors.
- This technique provides crucial data for understanding laser-accelerated particle beams.
- The developed calibration method enhances the reliability of IP-based measurements.
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