Improved metastable de-excitation spectrometer using laser-cooling techniques

Andrew Pratt; Alexander Roskoss; Herv́ Ḿnard; Marcus Jacka

doi:10.1063/1.1896685

Improved metastable de-excitation spectrometer using laser-cooling techniques

Andrew Pratt
, Alexander Roskoss
, Herv́ Ḿnard
, Marcus Jacka

Centre for Anatomy and Human Identification

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Details of a new approach for performing metastable de-excitation spectroscopy are given. A beam of metastable (2 S3) helium atoms, produced in a hollow cathode dc discharge, is collimated and subsequently focused using Doppler cooling of the 2 S13 -2 P23 transition at 1083 nm, forming an intense probe of up to 1× 1012 atoms s-1 cm-2. The large distance (2.5 m) between source and sample means that the beam is relatively free of UV photons and 2 S1 metastable atoms, removing the need for quench lamps and chopper wheels. As well as providing a clean high intensity source, the well defined nature of the beam is a necessary step towards using more sophisticated laser-cooling techniques with the ultimate aim of producing a metastable helium microscope. MDS and UPS spectra from Si(111) are shown.

Original language	English
Article number	053102
Journal	Review of Scientific Instruments
Volume	76
Issue number	5
Early online date	Apr 2005
DOIs	https://doi.org/10.1063/1.1896685
Publication status	Published - May 2005

Keywords

Atomic and molecular beams
Statistical methods
Surface states
Atomic and molecular beam sources
Mirrors

ASJC Scopus subject areas

Instrumentation

Access to Document

10.1063/1.1896685

Cite this

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title = "Improved metastable de-excitation spectrometer using laser-cooling techniques",

abstract = "Details of a new approach for performing metastable de-excitation spectroscopy are given. A beam of metastable (2 S3) helium atoms, produced in a hollow cathode dc discharge, is collimated and subsequently focused using Doppler cooling of the 2 S13 -2 P23 transition at 1083 nm, forming an intense probe of up to 1× 1012 atoms s-1 cm-2. The large distance (2.5 m) between source and sample means that the beam is relatively free of UV photons and 2 S1 metastable atoms, removing the need for quench lamps and chopper wheels. As well as providing a clean high intensity source, the well defined nature of the beam is a necessary step towards using more sophisticated laser-cooling techniques with the ultimate aim of producing a metastable helium microscope. MDS and UPS spectra from Si(111) are shown.",

keywords = "Atomic and molecular beams , Statistical methods , Surface states , Atomic and molecular beam sources , Mirrors",

author = "Andrew Pratt and Alexander Roskoss and Her{\'v} Ḿnard and Marcus Jacka",

note = "No funding info",

year = "2005",

month = may,

doi = "10.1063/1.1896685",

language = "English",

volume = "76",

journal = "Review of Scientific Instruments",

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T1 - Improved metastable de-excitation spectrometer using laser-cooling techniques

AU - Pratt, Andrew

AU - Roskoss, Alexander

AU - Ḿnard, Herv́

AU - Jacka, Marcus

N1 - No funding info

PY - 2005/5

Y1 - 2005/5

N2 - Details of a new approach for performing metastable de-excitation spectroscopy are given. A beam of metastable (2 S3) helium atoms, produced in a hollow cathode dc discharge, is collimated and subsequently focused using Doppler cooling of the 2 S13 -2 P23 transition at 1083 nm, forming an intense probe of up to 1× 1012 atoms s-1 cm-2. The large distance (2.5 m) between source and sample means that the beam is relatively free of UV photons and 2 S1 metastable atoms, removing the need for quench lamps and chopper wheels. As well as providing a clean high intensity source, the well defined nature of the beam is a necessary step towards using more sophisticated laser-cooling techniques with the ultimate aim of producing a metastable helium microscope. MDS and UPS spectra from Si(111) are shown.

AB - Details of a new approach for performing metastable de-excitation spectroscopy are given. A beam of metastable (2 S3) helium atoms, produced in a hollow cathode dc discharge, is collimated and subsequently focused using Doppler cooling of the 2 S13 -2 P23 transition at 1083 nm, forming an intense probe of up to 1× 1012 atoms s-1 cm-2. The large distance (2.5 m) between source and sample means that the beam is relatively free of UV photons and 2 S1 metastable atoms, removing the need for quench lamps and chopper wheels. As well as providing a clean high intensity source, the well defined nature of the beam is a necessary step towards using more sophisticated laser-cooling techniques with the ultimate aim of producing a metastable helium microscope. MDS and UPS spectra from Si(111) are shown.

KW - Atomic and molecular beams

KW - Statistical methods

KW - Surface states

KW - Atomic and molecular beam sources

KW - Mirrors

UR - https://www.scopus.com/pages/publications/18744376050

U2 - 10.1063/1.1896685

DO - 10.1063/1.1896685

M3 - Article

AN - SCOPUS:18744376050

SN - 0034-6748

VL - 76

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 5

M1 - 053102

ER -

Improved metastable de-excitation spectrometer using laser-cooling techniques

Abstract

Keywords

ASJC Scopus subject areas

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