Development and characterization of a laser-plasma soft X-ray source for contact microscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00352424" target="_blank" >RIV/68407700:21340/17:00352424 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.nimb.2017.03.082" target="_blank" >https://doi.org/10.1016/j.nimb.2017.03.082</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nimb.2017.03.082" target="_blank" >10.1016/j.nimb.2017.03.082</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Development and characterization of a laser-plasma soft X-ray source for contact microscopy

Popis výsledku v původním jazyce

In this work, we present a compact laser-produced plasma source of X-rays, developed and characterized for application in soft X-ray contact microscopy (SXCM). The source is based on a double stream gas puff target, irradiated with a commercially available Nd:YAG laser, delivering pulses with energy up to 740 mJ and 4 ns pulse duration at 10 Hz repetition rate. The target is formed by pulsed injection of a stream of high-Z gas (argon) into a cloud of low Z-gas (helium) by using an electromagnetic valve with a double nozzle setup. The source is designed to irradiate specimens, both in vacuum and in helium atmosphere with nanosecond pulses of soft X-rays in the "water-window" spectral range. The source is capable of delivering a photon fluence of about 1.09 x 10(3) photon/mu m(2)/pulse at a sample placed in vacuum at a distance of about 20 mm downstream the source. It can also deliver a photon fluence of about 9.31 x 10(2) photons/mu m(2)/pulse at a sample placed in a helium atmosphere at the same position. The source design and results of the characterization measurements as well as the optimization of the source are presented and discussed. The source was successfully applied in the preliminary experiments on soft X-ray contact microscopy and images of microstructures and biological specimens with similar to 80 nm half-pitch spatial resolution, obtained in helium atmosphere, are presented.

Název v anglickém jazyce

Development and characterization of a laser-plasma soft X-ray source for contact microscopy

Popis výsledku anglicky

In this work, we present a compact laser-produced plasma source of X-rays, developed and characterized for application in soft X-ray contact microscopy (SXCM). The source is based on a double stream gas puff target, irradiated with a commercially available Nd:YAG laser, delivering pulses with energy up to 740 mJ and 4 ns pulse duration at 10 Hz repetition rate. The target is formed by pulsed injection of a stream of high-Z gas (argon) into a cloud of low Z-gas (helium) by using an electromagnetic valve with a double nozzle setup. The source is designed to irradiate specimens, both in vacuum and in helium atmosphere with nanosecond pulses of soft X-rays in the "water-window" spectral range. The source is capable of delivering a photon fluence of about 1.09 x 10(3) photon/mu m(2)/pulse at a sample placed in vacuum at a distance of about 20 mm downstream the source. It can also deliver a photon fluence of about 9.31 x 10(2) photons/mu m(2)/pulse at a sample placed in a helium atmosphere at the same position. The source design and results of the characterization measurements as well as the optimization of the source are presented and discussed. The source was successfully applied in the preliminary experiments on soft X-ray contact microscopy and images of microstructures and biological specimens with similar to 80 nm half-pitch spatial resolution, obtained in helium atmosphere, are presented.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Nuclear Instruments and Methods in Physics Research, Section B, Beam Interactions with Materials and Atoms

ISSN

0168-583X

e-ISSN

1872-9584

Svazek periodika

411

Číslo periodika v rámci svazku

Nov

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

35-43

Kód UT WoS článku

000415772700007

EID výsledku v databázi Scopus

2-s2.0-85015810174