Mathematical Physics Analysis of Nozzle Shaping at the Gas Outlet from the Aperture to the Differentially Pumped Chamber in Environmental Scanning Electron Microscopy (ESEM)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F24%3A00586388" target="_blank" >RIV/68081731:_____/24:00586388 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26220/24:PU151410

Result on the web

<a href="https://www.mdpi.com/1424-8220/24/10/3243" target="_blank" >https://www.mdpi.com/1424-8220/24/10/3243</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/s24103243" target="_blank" >10.3390/s24103243</a>

Result language

angličtina

Original language name

Mathematical Physics Analysis of Nozzle Shaping at the Gas Outlet from the Aperture to the Differentially Pumped Chamber in Environmental Scanning Electron Microscopy (ESEM)

Original language description

A combination of experimental measurement preparations using pressure and temperature sensors in conjunction with the theory of one-dimensional isentropic flow and mathematical physics analyses is presented as a tool for analysis in this paper. Furthermore, the subsequent development of a nozzle for use in environmental electron microscopy between the specimen chamber and the differentially pumped chamber is described. Based on experimental measurements, an analysis of the impact of the nozzle shaping located behind the aperture on the character of the supersonic flow and the resulting dispersion of the electron beam passing through the differential pumped chamber is carried out on the determined pressure ratio using a combination of theory and mathematical physics analyses. The results show that nozzle shapes causing under-expanded gas outflow from the aperture to the nozzle have a worse impact on the dispersion of the primary electron beam. This is due to the flow velocity control. The controlled reduction in the static pressure curve on the primary electron beam path thus causes a significantly higher course of electron dispersion values than variants with shapes causing over-expanded gas outflow.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

20201 - Electrical and electronic engineering

Project

<a href="/en/project/GA22-25799S" target="_blank" >GA22-25799S: Correlative Fluorescence Microscopy and Advanced Low-energy ESEM for Imaging of Immuno-Labelled Wet Biological Samples.</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

Sensors

ISSN

1424-8220

e-ISSN

1424-8220

Volume of the periodical

24

Issue of the periodical within the volume

10

Country of publishing house

CH - SWITZERLAND

Number of pages

26

Pages from-to

3243

UT code for WoS article

001231643500001

EID of the result in the Scopus database

2-s2.0-85194219025