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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

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

ISSN

0168-583X

e-ISSN

1872-9584

Volume of the periodical

411

Issue of the periodical within the volume

Nov

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

35-43

UT code for WoS article

000415772700007

EID of the result in the Scopus database

2-s2.0-85015810174