Efficient Charge Collection in Coplanar-Grid Radiation Detectors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10387109" target="_blank" >RIV/00216208:11320/18:10387109 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevApplied.9.054020" target="_blank" >https://doi.org/10.1103/PhysRevApplied.9.054020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevApplied.9.054020" target="_blank" >10.1103/PhysRevApplied.9.054020</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Efficient Charge Collection in Coplanar-Grid Radiation Detectors

Popis výsledku v původním jazyce

We model laser-induced transient-current waveforms in radiation coplanar-grid detectors. Poisson&apos;s equation is solved by the finite-element method and currents induced by a photogenerated charge are obtained using the Shockley-Ramo theorem. The spectral response on a radiation flux is modeled by Monte Carlo simulations. We show a 10x improved spectral resolution of the coplanar-grid detector using differential signal sensing. We model the current waveform dependence on the doping, depletion width, diffusion, and detector shielding, and their mutual dependence is discussed in terms of detector optimization. The numerical simulations are successfully compared to experimental data, and further model simplifications are proposed. The space charge below electrodes and a nonhomogeneous electric field on a coplanar-grid anode are found to be the dominant contributions to laser-induced transient-current waveforms.

Název v anglickém jazyce

Efficient Charge Collection in Coplanar-Grid Radiation Detectors

Popis výsledku anglicky

We model laser-induced transient-current waveforms in radiation coplanar-grid detectors. Poisson&apos;s equation is solved by the finite-element method and currents induced by a photogenerated charge are obtained using the Shockley-Ramo theorem. The spectral response on a radiation flux is modeled by Monte Carlo simulations. We show a 10x improved spectral resolution of the coplanar-grid detector using differential signal sensing. We model the current waveform dependence on the doping, depletion width, diffusion, and detector shielding, and their mutual dependence is discussed in terms of detector optimization. The numerical simulations are successfully compared to experimental data, and further model simplifications are proposed. The space charge below electrodes and a nonhomogeneous electric field on a coplanar-grid anode are found to be the dominant contributions to laser-induced transient-current waveforms.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GA16-23165S" target="_blank" >GA16-23165S: Příprava elektrických kontaktů na detektorech záření CdTe a CdZnTe</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review Applied

ISSN

2331-7019

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

000433002200004

EID výsledku v databázi Scopus

2-s2.0-85047529243