Note: A modular and robust continuous supersonic expansion discharge source

Kyle N. Crabtree; Carrie A. Kauffman; Benjamin J. McCall

doi:10.1063/1.3478019

Note: A modular and robust continuous supersonic expansion discharge source

Kyle N. Crabtree, Carrie A. Kauffman, Benjamin J. McCall

Research output: Contribution to journal › Review article › peer-review

Abstract

A direct current discharge has been coupled with a continuous supersonic expansion to provide a source of rotationally cold molecular ions for gas phase spectroscopy. Constructed primarily of machinable ceramic and stainless steel, this source design is modular, customizable, and robust. Its performance has been assessed by recording transitions within the ν₂ fundamental band of H₃⁺ using cavity ringdown spectroscopy to determine the rotational temperature of ions produced in the free-jet expansion. Temperature and column density were recorded as a function of discharge current as the source was operated over a period of 200 h. Observed temperatures ranged between 50-110 K, and the ion column densities between 8× 10¹⁰ and 2× 10¹² cm^-2.

Original language	English (US)
Article number	086103
Journal	Review of Scientific Instruments
Volume	81
Issue number	8
DOIs	https://doi.org/10.1063/1.3478019
State	Published - Aug 2010
Externally published	Yes

ASJC Scopus subject areas

Instrumentation

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10.1063/1.3478019

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title = "Note: A modular and robust continuous supersonic expansion discharge source",

abstract = "A direct current discharge has been coupled with a continuous supersonic expansion to provide a source of rotationally cold molecular ions for gas phase spectroscopy. Constructed primarily of machinable ceramic and stainless steel, this source design is modular, customizable, and robust. Its performance has been assessed by recording transitions within the ν2 fundamental band of H3+ using cavity ringdown spectroscopy to determine the rotational temperature of ions produced in the free-jet expansion. Temperature and column density were recorded as a function of discharge current as the source was operated over a period of 200 h. Observed temperatures ranged between 50-110 K, and the ion column densities between 8× 1010 and 2× 1012 cm-2.",

author = "Crabtree, {Kyle N.} and Kauffman, {Carrie A.} and McCall, {Benjamin J.}",

note = "Funding Information: The authors would like to thank Professor Susanna Widicus Weaver and Brian Pohrte for their early work on continuous supersonic expansion discharge sources in our laboratory. We also thank James Hodges for his work on the difference frequency generation laser system and Christopher Neese for his CFN-899 Autoscan dye laser control software. This work has been supported by an NSF CAREER award (Contract No. CHE-0449592) by an Air Force Young Investigator Award (Contract No. FA 9550-07-1-0128), and by the David and Lucile Packard Foundation. ",

year = "2010",

month = aug,

doi = "10.1063/1.3478019",

language = "English (US)",

volume = "81",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics Publising LLC",

number = "8",

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T2 - A modular and robust continuous supersonic expansion discharge source

AU - Crabtree, Kyle N.

AU - Kauffman, Carrie A.

AU - McCall, Benjamin J.

N1 - Funding Information: The authors would like to thank Professor Susanna Widicus Weaver and Brian Pohrte for their early work on continuous supersonic expansion discharge sources in our laboratory. We also thank James Hodges for his work on the difference frequency generation laser system and Christopher Neese for his CFN-899 Autoscan dye laser control software. This work has been supported by an NSF CAREER award (Contract No. CHE-0449592) by an Air Force Young Investigator Award (Contract No. FA 9550-07-1-0128), and by the David and Lucile Packard Foundation.

PY - 2010/8

Y1 - 2010/8

N2 - A direct current discharge has been coupled with a continuous supersonic expansion to provide a source of rotationally cold molecular ions for gas phase spectroscopy. Constructed primarily of machinable ceramic and stainless steel, this source design is modular, customizable, and robust. Its performance has been assessed by recording transitions within the ν2 fundamental band of H3+ using cavity ringdown spectroscopy to determine the rotational temperature of ions produced in the free-jet expansion. Temperature and column density were recorded as a function of discharge current as the source was operated over a period of 200 h. Observed temperatures ranged between 50-110 K, and the ion column densities between 8× 1010 and 2× 1012 cm-2.

AB - A direct current discharge has been coupled with a continuous supersonic expansion to provide a source of rotationally cold molecular ions for gas phase spectroscopy. Constructed primarily of machinable ceramic and stainless steel, this source design is modular, customizable, and robust. Its performance has been assessed by recording transitions within the ν2 fundamental band of H3+ using cavity ringdown spectroscopy to determine the rotational temperature of ions produced in the free-jet expansion. Temperature and column density were recorded as a function of discharge current as the source was operated over a period of 200 h. Observed temperatures ranged between 50-110 K, and the ion column densities between 8× 1010 and 2× 1012 cm-2.

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Note: A modular and robust continuous supersonic expansion discharge source

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