Publication detail

Apertures with Laval nozzle and circular orifice in secondary electron detector for environmental scanning electron microscope

VYROUBAL, P. MAXA, J. NEDĚLA, V. JIRÁK, J. HLADKÁ, K.

Original Title

Apertures with Laval nozzle and circular orifice in secondary electron detector for environmental scanning electron microscope

English Title

Apertures with Laval nozzle and circular orifice in secondary electron detector for environmental scanning electron microscope

Type

journal article - other

Language

en

Original Abstract

Environmental scanning electron microscopes offer wide possibilities for the exploration of various types of specimens, especially non-conductive and wet specimens containing different material phases. The evaluation of pressure on the secondary electrons trajectory is one of the important parameter by design of scintillation detector of secondary electrons. The final process is influenced by the size and the shape of the apertures used to separate areas with different pressure gradient. The comparison of the aperture with circular hole and aperture with Laval nozzle is the aim of this article.

English abstract

Environmental scanning electron microscopes offer wide possibilities for the exploration of various types of specimens, especially non-conductive and wet specimens containing different material phases. The evaluation of pressure on the secondary electrons trajectory is one of the important parameter by design of scintillation detector of secondary electrons. The final process is influenced by the size and the shape of the apertures used to separate areas with different pressure gradient. The comparison of the aperture with circular hole and aperture with Laval nozzle is the aim of this article.

Keywords

Aperture, Laval nozzle, circular hole, Environmental scanning electron microscope, scintillation detector, trajectory of secondary electrons, Mach number, pressure, ANSYS.

RIV year

2013

Released

28.06.2013

Publisher

University of Defence

Location

Brno

Pages from

59

Pages to

69

Pages count

11

BibTex


@article{BUT101864,
  author="Petr {Vyroubal} and Jiří {Maxa} and Vilém {Neděla} and Josef {Jirák} and Kristýna {Lepltová}",
  title="Apertures with Laval nozzle and circular orifice in secondary electron detector for environmental scanning electron microscope",
  annote="Environmental scanning electron microscopes offer wide possibilities for the exploration of various types of specimens, especially non-conductive and wet specimens containing different material phases. The evaluation of pressure on the secondary electrons trajectory is one of the important parameter by design of scintillation detector of secondary electrons. The final process is influenced by the size and the shape of the apertures used to separate areas with different pressure gradient.
The comparison of the aperture with circular hole and aperture with Laval nozzle is the aim of this article.",
  address="University of Defence",
  chapter="101864",
  institution="University of Defence",
  number="1",
  volume="8",
  year="2013",
  month="june",
  pages="59--69",
  publisher="University of Defence",
  type="journal article - other"
}