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Magnetic field effect on the free induction decay of hydroxyl radicals (OH) in the terahertz region. / Chesnokov, E. N.; Kubarev, V. V.; Krasnoperov, L. N. et al.

In: Physical Chemistry Chemical Physics, Vol. 22, No. 36, 28.09.2020, p. 20248-20252.

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

Harvard

Chesnokov, EN, Kubarev, VV, Krasnoperov, LN & Koshlyakov, PV 2020, 'Magnetic field effect on the free induction decay of hydroxyl radicals (OH) in the terahertz region', Physical Chemistry Chemical Physics, vol. 22, no. 36, pp. 20248-20252. https://doi.org/10.1039/d0cp02773a

APA

Chesnokov, E. N., Kubarev, V. V., Krasnoperov, L. N., & Koshlyakov, P. V. (2020). Magnetic field effect on the free induction decay of hydroxyl radicals (OH) in the terahertz region. Physical Chemistry Chemical Physics, 22(36), 20248-20252. https://doi.org/10.1039/d0cp02773a

Vancouver

Chesnokov EN, Kubarev VV, Krasnoperov LN, Koshlyakov PV. Magnetic field effect on the free induction decay of hydroxyl radicals (OH) in the terahertz region. Physical Chemistry Chemical Physics. 2020 Sept 28;22(36):20248-20252. doi: 10.1039/d0cp02773a

Author

Chesnokov, E. N. ; Kubarev, V. V. ; Krasnoperov, L. N. et al. / Magnetic field effect on the free induction decay of hydroxyl radicals (OH) in the terahertz region. In: Physical Chemistry Chemical Physics. 2020 ; Vol. 22, No. 36. pp. 20248-20252.

BibTeX

@article{3cab40a635834f1b826016df38467c88,
title = "Magnetic field effect on the free induction decay of hydroxyl radicals (OH) in the terahertz region",
abstract = "The effect of an external longitudinal magnetic field on the optical free induction decay from a free radical is observed for the first time. The experiments were performed on a rotational transition of the hydroxyl radical, OH (2Π3/2(J = 1) ← 2Π3/2(J = 0) at 83.8 cm-1), using a terahertz free electron laser. In contrast to the results of the experiments with a stable paramagnetic molecule, NO, the observed effect of an external magnetic field on the free induction decay from hydroxyl radicals is more complicated. A longitudinal magnetic field leads to the rotation of the polarization plane of the FID radiation and to an additional modulation of the signal intensity. The angle of the rotation of the plane of polarization is large, in agreement with the theoretical predictions. The observed FID kinetics in the time domain are in semi-quantitative agreement with the modeling. This observation opens an opportunity for the selective detection of weak signals of short-lived reactive paramagnetic free radicals from overwhelming signals that originate from stable non-paramagnetic species by polarization discrimination.",
keywords = "SPECTROSCOPY, ROTATION, SUBMILLIMETER, DISTRIBUTIONS, O(D-1), LASER, H2O",
author = "Chesnokov, {E. N.} and Kubarev, {V. V.} and Krasnoperov, {L. N.} and Koshlyakov, {P. V.}",
year = "2020",
month = sep,
day = "28",
doi = "10.1039/d0cp02773a",
language = "English",
volume = "22",
pages = "20248--20252",
journal = "Physical Chemistry Chemical Physics",
issn = "1463-9076",
publisher = "Royal Society of Chemistry",
number = "36",

}

RIS

TY - JOUR

T1 - Magnetic field effect on the free induction decay of hydroxyl radicals (OH) in the terahertz region

AU - Chesnokov, E. N.

AU - Kubarev, V. V.

AU - Krasnoperov, L. N.

AU - Koshlyakov, P. V.

PY - 2020/9/28

Y1 - 2020/9/28

N2 - The effect of an external longitudinal magnetic field on the optical free induction decay from a free radical is observed for the first time. The experiments were performed on a rotational transition of the hydroxyl radical, OH (2Π3/2(J = 1) ← 2Π3/2(J = 0) at 83.8 cm-1), using a terahertz free electron laser. In contrast to the results of the experiments with a stable paramagnetic molecule, NO, the observed effect of an external magnetic field on the free induction decay from hydroxyl radicals is more complicated. A longitudinal magnetic field leads to the rotation of the polarization plane of the FID radiation and to an additional modulation of the signal intensity. The angle of the rotation of the plane of polarization is large, in agreement with the theoretical predictions. The observed FID kinetics in the time domain are in semi-quantitative agreement with the modeling. This observation opens an opportunity for the selective detection of weak signals of short-lived reactive paramagnetic free radicals from overwhelming signals that originate from stable non-paramagnetic species by polarization discrimination.

AB - The effect of an external longitudinal magnetic field on the optical free induction decay from a free radical is observed for the first time. The experiments were performed on a rotational transition of the hydroxyl radical, OH (2Π3/2(J = 1) ← 2Π3/2(J = 0) at 83.8 cm-1), using a terahertz free electron laser. In contrast to the results of the experiments with a stable paramagnetic molecule, NO, the observed effect of an external magnetic field on the free induction decay from hydroxyl radicals is more complicated. A longitudinal magnetic field leads to the rotation of the polarization plane of the FID radiation and to an additional modulation of the signal intensity. The angle of the rotation of the plane of polarization is large, in agreement with the theoretical predictions. The observed FID kinetics in the time domain are in semi-quantitative agreement with the modeling. This observation opens an opportunity for the selective detection of weak signals of short-lived reactive paramagnetic free radicals from overwhelming signals that originate from stable non-paramagnetic species by polarization discrimination.

KW - SPECTROSCOPY

KW - ROTATION

KW - SUBMILLIMETER

KW - DISTRIBUTIONS

KW - O(D-1)

KW - LASER

KW - H2O

UR - http://www.scopus.com/inward/record.url?scp=85091548603&partnerID=8YFLogxK

U2 - 10.1039/d0cp02773a

DO - 10.1039/d0cp02773a

M3 - Article

C2 - 32966402

AN - SCOPUS:85091548603

VL - 22

SP - 20248

EP - 20252

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

SN - 1463-9076

IS - 36

ER -

ID: 25676237