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Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

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Published on: March 29, 2016

Diagnostics for ion beam driven high energy density physics experiments.

F M Bieniosek¹, E Henestroza, S Lidia

¹Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, California 94720 USA. fmbieniosek@lbl.gov

The Review of Scientific Instruments

|November 2, 2010

Summary

Heavy ion beams create high-energy-density warm dense matter (WDM) for study. Specialized diagnostics were developed and fielded to analyze this exotic state of matter created at the NDCX-I accelerator.

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Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

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Area of Science:

Plasma Physics
High Energy Density Physics
Accelerator Science

Background:

Intense heavy ion beams can heat matter to high energy densities.
Warm dense matter (WDM) is an exotic state requiring specialized study.
The NDCX-I accelerator provides a platform for WDM research.

Purpose of the Study:

To investigate the properties of warm dense matter generated by heavy ion beams.
To develop and implement advanced diagnostic techniques for WDM research.
To prepare for future experiments at the NDCX-II accelerator.

Main Methods:

Heating foil targets with a 0.3 MeV, 30 mA K(+) ion beam from NDCX-I.
Utilizing combined longitudinal and transverse neutralized drift compression of the ion beam.
Employing a suite of specialized diagnostics: multichannel optical pyrometer, streak camera, VISAR, beam transmission diagnostics, and gated cameras.

Main Results:

Successful generation of warm dense matter using heavy ion beams.
Fielding of a comprehensive set of target diagnostics.
Demonstration of heating from both compressed and uncompressed parts of the ion beam.

Conclusions:

The developed diagnostics are effective for studying WDM.
The NDCX-I experiments provide valuable data on ion-beam-driven WDM.
Future diagnostic development and a new target chamber are planned for NDCX-II.