Pressure broadening of atomic oxygen two-photon absorption laser induced fluorescence

D. Marinov, C. Drag, C. Blondel, O. Guaitella, J. Golda, B.L.M. Klarenaar, R.A.H. Engeln, V. Schulz-von der Gathen, J.-P. Booth

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Atomic oxygen, considered to be a determining reactant in plasma applications at ambient pressure, is routinely detected by two-photon absorption laser induced fluorescence (TALIF). Here, pressure broadening of the (2p 4 3 P 2  →  3p 3 P J=0,1,2) two-photon transition in oxygen atoms was investigated using a high-resolution TALIF technique in normal and Doppler-free configurations. The pressure broadening coefficients determined were ${{\gamma}_{{{\text{O}}_{2}}}}$   =  0.40  ±  0.08  cm−1/bar for oxygen molecules and ${{\gamma}_{\text{He}}}$   =  0.46  ±  0.03 cm−1/bar for helium atoms. These correspond to pressure broadening rate constants $k_{\text{PB}}^{{{\text{O}}_{2}}}$   =  9 centerdot 10–9 cm3 s−1 and $k_{\text{PB}}^{\text{He}}$   =  4 centerdot 10−9 cm3 s−1, respectively. The well-known quenching rate constants of O(3p 3 P J ) by O2 and He are at least one order of magnitude smaller, which signifies that non-quenching collisions constitute the main line-broadening mechanism. In addition to providing new insights into collisional processes of oxygen atoms in electronically excited 3p 3 P J state, reported pressure broadening parameters are important for quantification of oxygen TALIF line profiles when both collisional and Doppler broadening mechanisms are important. Thus, the Doppler component (and hence the temperature of oxygen atoms) can be accurately determined from high resolution TALIF measurements in a broad range of conditions.
Originele taal-2Engels
Artikelnummer06LT03
Pagina's (van-tot)1-5
TijdschriftPlasma Sources Science and Technology
Volume25
Nummer van het tijdschrift6
DOI's
StatusGepubliceerd - dec 2016

Citeer dit

Marinov, D., Drag, C., Blondel, C., Guaitella, O., Golda, J., Klarenaar, B. L. M., ... Booth, J-P. (2016). Pressure broadening of atomic oxygen two-photon absorption laser induced fluorescence. Plasma Sources Science and Technology, 25(6), 1-5. [06LT03]. https://doi.org/10.1088/0963-0252/25/6/06LT03
Marinov, D. ; Drag, C. ; Blondel, C. ; Guaitella, O. ; Golda, J. ; Klarenaar, B.L.M. ; Engeln, R.A.H. ; Schulz-von der Gathen, V. ; Booth, J.-P. / Pressure broadening of atomic oxygen two-photon absorption laser induced fluorescence. In: Plasma Sources Science and Technology. 2016 ; Vol. 25, Nr. 6. blz. 1-5.
@article{b2565ccec9284eeab8148fc9e6f2bb2d,
title = "Pressure broadening of atomic oxygen two-photon absorption laser induced fluorescence",
abstract = "Atomic oxygen, considered to be a determining reactant in plasma applications at ambient pressure, is routinely detected by two-photon absorption laser induced fluorescence (TALIF). Here, pressure broadening of the (2p 4 3 P 2  →  3p 3 P J=0,1,2) two-photon transition in oxygen atoms was investigated using a high-resolution TALIF technique in normal and Doppler-free configurations. The pressure broadening coefficients determined were ${{\gamma}_{{{\text{O}}_{2}}}}$   =  0.40  ±  0.08  cm−1/bar for oxygen molecules and ${{\gamma}_{\text{He}}}$   =  0.46  ±  0.03 cm−1/bar for helium atoms. These correspond to pressure broadening rate constants $k_{\text{PB}}^{{{\text{O}}_{2}}}$   =  9 centerdot 10–9 cm3 s−1 and $k_{\text{PB}}^{\text{He}}$   =  4 centerdot 10−9 cm3 s−1, respectively. The well-known quenching rate constants of O(3p 3 P J ) by O2 and He are at least one order of magnitude smaller, which signifies that non-quenching collisions constitute the main line-broadening mechanism. In addition to providing new insights into collisional processes of oxygen atoms in electronically excited 3p 3 P J state, reported pressure broadening parameters are important for quantification of oxygen TALIF line profiles when both collisional and Doppler broadening mechanisms are important. Thus, the Doppler component (and hence the temperature of oxygen atoms) can be accurately determined from high resolution TALIF measurements in a broad range of conditions.",
keywords = "TALIF, oxygen atoms, pressure broadening, Doppler-free, sub-Doppler spectroscopy",
author = "D. Marinov and C. Drag and C. Blondel and O. Guaitella and J. Golda and B.L.M. Klarenaar and R.A.H. Engeln and {Schulz-von der Gathen}, V. and J.-P. Booth",
year = "2016",
month = "12",
doi = "10.1088/0963-0252/25/6/06LT03",
language = "English",
volume = "25",
pages = "1--5",
journal = "Plasma Sources Science and Technology",
issn = "0963-0252",
publisher = "Institute of Physics",
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Marinov, D, Drag, C, Blondel, C, Guaitella, O, Golda, J, Klarenaar, BLM, Engeln, RAH, Schulz-von der Gathen, V & Booth, J-P 2016, 'Pressure broadening of atomic oxygen two-photon absorption laser induced fluorescence', Plasma Sources Science and Technology, vol. 25, nr. 6, 06LT03, blz. 1-5. https://doi.org/10.1088/0963-0252/25/6/06LT03

Pressure broadening of atomic oxygen two-photon absorption laser induced fluorescence. / Marinov, D.; Drag, C.; Blondel, C.; Guaitella, O.; Golda, J.; Klarenaar, B.L.M.; Engeln, R.A.H.; Schulz-von der Gathen, V.; Booth, J.-P.

In: Plasma Sources Science and Technology, Vol. 25, Nr. 6, 06LT03, 12.2016, blz. 1-5.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

TY - JOUR

T1 - Pressure broadening of atomic oxygen two-photon absorption laser induced fluorescence

AU - Marinov, D.

AU - Drag, C.

AU - Blondel, C.

AU - Guaitella, O.

AU - Golda, J.

AU - Klarenaar, B.L.M.

AU - Engeln, R.A.H.

AU - Schulz-von der Gathen, V.

AU - Booth, J.-P.

PY - 2016/12

Y1 - 2016/12

N2 - Atomic oxygen, considered to be a determining reactant in plasma applications at ambient pressure, is routinely detected by two-photon absorption laser induced fluorescence (TALIF). Here, pressure broadening of the (2p 4 3 P 2  →  3p 3 P J=0,1,2) two-photon transition in oxygen atoms was investigated using a high-resolution TALIF technique in normal and Doppler-free configurations. The pressure broadening coefficients determined were ${{\gamma}_{{{\text{O}}_{2}}}}$   =  0.40  ±  0.08  cm−1/bar for oxygen molecules and ${{\gamma}_{\text{He}}}$   =  0.46  ±  0.03 cm−1/bar for helium atoms. These correspond to pressure broadening rate constants $k_{\text{PB}}^{{{\text{O}}_{2}}}$   =  9 centerdot 10–9 cm3 s−1 and $k_{\text{PB}}^{\text{He}}$   =  4 centerdot 10−9 cm3 s−1, respectively. The well-known quenching rate constants of O(3p 3 P J ) by O2 and He are at least one order of magnitude smaller, which signifies that non-quenching collisions constitute the main line-broadening mechanism. In addition to providing new insights into collisional processes of oxygen atoms in electronically excited 3p 3 P J state, reported pressure broadening parameters are important for quantification of oxygen TALIF line profiles when both collisional and Doppler broadening mechanisms are important. Thus, the Doppler component (and hence the temperature of oxygen atoms) can be accurately determined from high resolution TALIF measurements in a broad range of conditions.

AB - Atomic oxygen, considered to be a determining reactant in plasma applications at ambient pressure, is routinely detected by two-photon absorption laser induced fluorescence (TALIF). Here, pressure broadening of the (2p 4 3 P 2  →  3p 3 P J=0,1,2) two-photon transition in oxygen atoms was investigated using a high-resolution TALIF technique in normal and Doppler-free configurations. The pressure broadening coefficients determined were ${{\gamma}_{{{\text{O}}_{2}}}}$   =  0.40  ±  0.08  cm−1/bar for oxygen molecules and ${{\gamma}_{\text{He}}}$   =  0.46  ±  0.03 cm−1/bar for helium atoms. These correspond to pressure broadening rate constants $k_{\text{PB}}^{{{\text{O}}_{2}}}$   =  9 centerdot 10–9 cm3 s−1 and $k_{\text{PB}}^{\text{He}}$   =  4 centerdot 10−9 cm3 s−1, respectively. The well-known quenching rate constants of O(3p 3 P J ) by O2 and He are at least one order of magnitude smaller, which signifies that non-quenching collisions constitute the main line-broadening mechanism. In addition to providing new insights into collisional processes of oxygen atoms in electronically excited 3p 3 P J state, reported pressure broadening parameters are important for quantification of oxygen TALIF line profiles when both collisional and Doppler broadening mechanisms are important. Thus, the Doppler component (and hence the temperature of oxygen atoms) can be accurately determined from high resolution TALIF measurements in a broad range of conditions.

KW - TALIF

KW - oxygen atoms

KW - pressure broadening

KW - Doppler-free

KW - sub-Doppler spectroscopy

U2 - 10.1088/0963-0252/25/6/06LT03

DO - 10.1088/0963-0252/25/6/06LT03

M3 - Article

VL - 25

SP - 1

EP - 5

JO - Plasma Sources Science and Technology

JF - Plasma Sources Science and Technology

SN - 0963-0252

IS - 6

M1 - 06LT03

ER -