Superlattice-enhanced silicon soft X-ray and charged particle detectors with nanosecond time response

Looker, Quinn Michael; Aguirre, Brandon Adrian; Hoenk, M. E.; Jewell, A. D.; Sanchez, Marcos O.; Tierney, Brian David

doi:10.1016/j.nima.2018.11.052

Superlattice-enhanced silicon soft X-ray and charged particle detectors with nanosecond time response

Journal Article · Wed Nov 21 23:00:00 EST 2018 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI:https://doi.org/10.1016/j.nima.2018.11.052· OSTI ID:1492798

Looker, Quinn Michael ^[1]; Aguirre, Brandon Adrian ^[1]; Hoenk, M. E. ^[2]; Jewell, A. D. ^[2]; Sanchez, Marcos O. ^[1]; Tierney, Brian David ^[1]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
California Inst. of Technology (CalTech), Pasadena, CA (United States)

Here, silicon detectors are an essential measurement tool for Inertial Confinement Fusion and High-Energy-Density Physics Applications, where temporal response of the order of nanoseconds is essential. Soft X-rays (<1 keV), Ultraviolet light, and low-energy electrons (<10 keV) can provide essential information in diagnosing rapidly changing plasma conditions, but reducing the detector dead layer is essential to improving detector response for these shallowly absorbed particles. This paper details a study of silicon detector surface preparation methods such as ion implant parameters, and the addition of a quantum 2D superlattice, to produce fast detectors that are highly sensitive to shallowly absorbed radiation. Measurements of visible light quantum efficiency, electron responsivity, and pulsed x-ray response indicate that detectors with a 2-layer superlattice enjoy a significant benefit over equivalent detectors using an ion implant at the illuminated surface.

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1492798

Report Number(s):: SAND2019-0455J; 671583

Journal Information:: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Issue: C Vol. 916; ISSN 0168-9002

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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GaAs x-ray detectors with sub-nanosecond temporal response Looker, Quinn; Wood, Michael G.; Lake, Patrick W. Review of Scientific Instruments, Vol. 90, Issue 11 https://doi.org/10.1063/1.5127294	journal	November 2019

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