Internal-state thermometry by depletion spectroscopy in a cold guided beam of formaldehyde

M. Motsch; M. Schenk; L. D. Van Buuren; M. Zeppenfeld; P. W H Pinkse; G. Rempe

doi:10.1103/PhysRevA.76.061402

Internal-state thermometry by depletion spectroscopy in a cold guided beam of formaldehyde

M. Motsch^*, M. Schenk, L. D. Van Buuren, M. Zeppenfeld, P. W H Pinkse, G. Rempe

^*Corresponding author for this work

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

23 Citations (Scopus)

3 Downloads (Pure)

Abstract

We present measurements of the internal state distribution of electrostatically guided formaldehyde. Upon excitation with continuous tunable ultraviolet laser light the molecules dissociate, leading to a decrease in the molecular flux. The population of individual guided states is measured by addressing transitions originating from them. The measured populations of selected states show good agreement with theoretical calculations for different temperatures of the molecule source. The purity of the guided beam as deduced from the entropy of the guided sample using a source temperature of 150 K corresponds to that of a thermal ensemble with a temperature of about 30 K.

Original language	English
Article number	061402
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	76
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevA.76.061402
Publication status	Published - 20 Dec 2007
Externally published	Yes

Access to Document

10.1103/PhysRevA.76.061402

PhysRevA.76.061402Final published version, 220 KB

Cite this

@article{c91c162e514a4d189f66de901126afd8,

title = "Internal-state thermometry by depletion spectroscopy in a cold guided beam of formaldehyde",

abstract = "We present measurements of the internal state distribution of electrostatically guided formaldehyde. Upon excitation with continuous tunable ultraviolet laser light the molecules dissociate, leading to a decrease in the molecular flux. The population of individual guided states is measured by addressing transitions originating from them. The measured populations of selected states show good agreement with theoretical calculations for different temperatures of the molecule source. The purity of the guided beam as deduced from the entropy of the guided sample using a source temperature of 150 K corresponds to that of a thermal ensemble with a temperature of about 30 K.",

author = "M. Motsch and M. Schenk and {Van Buuren}, {L. D.} and M. Zeppenfeld and Pinkse, {P. W H} and G. Rempe",

year = "2007",

month = dec,

day = "20",

doi = "10.1103/PhysRevA.76.061402",

language = "English",

volume = "76",

journal = "Physical review A : atomic, molecular, and optical physics and quantum information",

issn = "2469-9926",

publisher = "American Physical Society",

number = "6",

}

TY - JOUR

T1 - Internal-state thermometry by depletion spectroscopy in a cold guided beam of formaldehyde

AU - Motsch, M.

AU - Schenk, M.

AU - Van Buuren, L. D.

AU - Zeppenfeld, M.

AU - Pinkse, P. W H

AU - Rempe, G.

PY - 2007/12/20

Y1 - 2007/12/20

N2 - We present measurements of the internal state distribution of electrostatically guided formaldehyde. Upon excitation with continuous tunable ultraviolet laser light the molecules dissociate, leading to a decrease in the molecular flux. The population of individual guided states is measured by addressing transitions originating from them. The measured populations of selected states show good agreement with theoretical calculations for different temperatures of the molecule source. The purity of the guided beam as deduced from the entropy of the guided sample using a source temperature of 150 K corresponds to that of a thermal ensemble with a temperature of about 30 K.

AB - We present measurements of the internal state distribution of electrostatically guided formaldehyde. Upon excitation with continuous tunable ultraviolet laser light the molecules dissociate, leading to a decrease in the molecular flux. The population of individual guided states is measured by addressing transitions originating from them. The measured populations of selected states show good agreement with theoretical calculations for different temperatures of the molecule source. The purity of the guided beam as deduced from the entropy of the guided sample using a source temperature of 150 K corresponds to that of a thermal ensemble with a temperature of about 30 K.

UR - http://www.scopus.com/inward/record.url?scp=37549025368&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.76.061402

DO - 10.1103/PhysRevA.76.061402

M3 - Article

AN - SCOPUS:37549025368

VL - 76

JO - Physical review A : atomic, molecular, and optical physics and quantum information

JF - Physical review A : atomic, molecular, and optical physics and quantum information

SN - 2469-9926

IS - 6

M1 - 061402

ER -

Internal-state thermometry by depletion spectroscopy in a cold guided beam of formaldehyde

Abstract

Access to Document

Other files and links

Fingerprint

Cite this