Molecular beam measurement of the magnetic susceptibility anisotropies and molecular quadrupole moment in H2CO

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The molecular Zeeman effect in formaldehyde was studied using a molecular beam maser spectrometer in fields to 17 kG. The molecular resonance linewidth was 5 kHz. ΔM = 0 and Δlf=±1 transitions were observed for the 110→111 rotational transition. The measured susceptibility anisotropies (in units of 10-6 erg/G 2·mole) are 2χaaχbb- χcc = 25.4±0.2 and 2χbbaa- χcc= -4.1±0.15. The molecular quadrupole moment obtained from thisdata (in units of 10-25 esu·cm2) are Qaa= -0.06±0.16, Qbb=0.33±0.12, and Q cc = - 0.27±0.20. The Stark effect produced by the motion of the molecules in the magnetic field (v̄×B̄) was clearly observed.

Original languageEnglish (US)
Pages (from-to)105-110
Number of pages6
JournalThe Journal of Chemical Physics
Volume54
Issue number1
StatePublished - 1971
Externally publishedYes

Fingerprint

Masers
Stark effect
Molecular beams
Magnetic susceptibility
Linewidth
Formaldehyde
molecular beams
Spectrometers
Anisotropy
quadrupoles
Magnetic fields
moments
magnetic permeability
anisotropy
Molecules
Zeeman effect
masers
formaldehyde
spectrometers
magnetic fields

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

@article{fe508ffed5ff4929bc513649e510dd0b,
title = "Molecular beam measurement of the magnetic susceptibility anisotropies and molecular quadrupole moment in H2CO",
abstract = "The molecular Zeeman effect in formaldehyde was studied using a molecular beam maser spectrometer in fields to 17 kG. The molecular resonance linewidth was 5 kHz. ΔM = 0 and Δlf=±1 transitions were observed for the 110→111 rotational transition. The measured susceptibility anisotropies (in units of 10-6 erg/G 2·mole) are 2χaaχbb- χcc = 25.4±0.2 and 2χbb-χaa- χcc= -4.1±0.15. The molecular quadrupole moment obtained from thisdata (in units of 10-25 esu·cm2) are Qaa= -0.06±0.16, Qbb=0.33±0.12, and Q cc = - 0.27±0.20. The Stark effect produced by the motion of the molecules in the magnetic field (v̄×B̄) was clearly observed.",
author = "Kukolich, {Stephen G}",
year = "1971",
language = "English (US)",
volume = "54",
pages = "105--110",
journal = "Journal of Chemical Physics",
issn = "0021-9606",
publisher = "American Institute of Physics Publising LLC",
number = "1",

}

TY - JOUR

T1 - Molecular beam measurement of the magnetic susceptibility anisotropies and molecular quadrupole moment in H2CO

AU - Kukolich, Stephen G

PY - 1971

Y1 - 1971

N2 - The molecular Zeeman effect in formaldehyde was studied using a molecular beam maser spectrometer in fields to 17 kG. The molecular resonance linewidth was 5 kHz. ΔM = 0 and Δlf=±1 transitions were observed for the 110→111 rotational transition. The measured susceptibility anisotropies (in units of 10-6 erg/G 2·mole) are 2χaaχbb- χcc = 25.4±0.2 and 2χbb-χaa- χcc= -4.1±0.15. The molecular quadrupole moment obtained from thisdata (in units of 10-25 esu·cm2) are Qaa= -0.06±0.16, Qbb=0.33±0.12, and Q cc = - 0.27±0.20. The Stark effect produced by the motion of the molecules in the magnetic field (v̄×B̄) was clearly observed.

AB - The molecular Zeeman effect in formaldehyde was studied using a molecular beam maser spectrometer in fields to 17 kG. The molecular resonance linewidth was 5 kHz. ΔM = 0 and Δlf=±1 transitions were observed for the 110→111 rotational transition. The measured susceptibility anisotropies (in units of 10-6 erg/G 2·mole) are 2χaaχbb- χcc = 25.4±0.2 and 2χbb-χaa- χcc= -4.1±0.15. The molecular quadrupole moment obtained from thisdata (in units of 10-25 esu·cm2) are Qaa= -0.06±0.16, Qbb=0.33±0.12, and Q cc = - 0.27±0.20. The Stark effect produced by the motion of the molecules in the magnetic field (v̄×B̄) was clearly observed.

UR - http://www.scopus.com/inward/record.url?scp=36849108237&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36849108237&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:36849108237

VL - 54

SP - 105

EP - 110

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 1

ER -