Autor: Gierszal, S. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Lineshape Measurements of Rotational Line in Millimeter-Wave Region by Second Harmonic Detection
Autorzy:: Stanek, J.
Gierszal, S.
Galica, J.
Powiązania:: https://bibliotekanauki.pl/articles/1929813.pdf
Data publikacji:: 1993-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 33.20.Bx
33.70.Jg
Opis:: Lineshape measurements of the J = 6 ← 5 OCS rotational transition were performed using a source-modulation microwave spectrometer. This is a very useful experimental technique but it introduces distortions to the line profile, therefore several authors have theoretically analyzed this problem with the aim of extracting the undistorted parameters of the spectra. The objective of this paper is to verify one of these theories which gives the relationship between harmonic signals and lineshape over wide range of modulation depth. Detailed comparison between the calculated and experimental harmonic signals shows very good agreement, and thus enables us to determine the unmodified line width and finally the pressure broadening factor of the rotational transition J = 6 ← 5 of OCS molecule to be equal to 6.59 ± 0.25 MHz/Tr.
Źródło:: Acta Physica Polonica A; 1993, 84, 6; 1027-1034
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Collisional Broadening of the J=7 ⇐ 6 Transition of t-Butyl Cyanide by CH$\text{}_{3}$CN, OCS, CO$\text{}_{2}$ and Helium
Autorzy:: Gierszal, S.
Galica, J.
Miś-Kuźmińska, E.
Powiązania:: https://bibliotekanauki.pl/articles/1920724.pdf
Data publikacji:: 1992-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 33.70.Jg
Opis:: Experimental studies of the broadening of the absorption line J = 6 ⇒ 7 of (CH$\text{}_{3}$)$\text{}_{3}$CCN due to collisions with the foreign perturbers He, CO$\text{}_{2}$, OCS, and CH$\text{}_{3}$CN have been carried out. The magnitude of the broadening coefficients reflects the type of interactions occurring in the molecular collisions. It has been concluded that the dipole-dipole and dipole-quadrupole interactions are predominant in the (CH$\text{}_{3}$)$\text{}_{3}$CCN admixed with CH$\text{}_{3}$CN and OCS. In the collisions between (CH$\text{}_{3}$)$\text{}_{3}$CCN and CO$\text{}_{2}$ the dipole-quadrupole interactions are present whereas the He perturbed by (CH$\text{}_{3}$)$\text{}_{3}$CCN exhibits dispersive type of interactions.
Źródło:: Acta Physica Polonica A; 1992, 81, 6; 613-617
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Temperature Dependence of Pressure Broadened Linewidth of J = 1 ⇐ 0 Rotational Transition of CH$\text{}_{3}$C$\text{}_{14}$N Molecule Mixed with OCS and H$\text{}_{2}$ Molecule
Autorzy:: Gierszal, S.
Galica, J.
Miś-Kuźmińska, E.
Powiązania:: https://bibliotekanauki.pl/articles/1932112.pdf
Data publikacji:: 1995-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 33.20.Bx
33.70.Jg
Opis:: The temperature dependence of the pressure-broadening parameters of the J = 1 ⇐ 0 rotational transition of OCS and H$\text{}_{2}$ in the ground vibrational state of CH$\text{}_{3}$C$\text{}_{14}$N molecule is measured in the temperature range between 248 and 293 K. The line shape of the absorption is recorded with a Stark modulated microwave spectrometer. Using least squares fits of the data to the Voigt line function, several contributions to the linewidth have been deduced. The experimental results are compared with the calculated results using Murphy and Boggs collision broadening theory. The pressure-broadening parameters C$\text{}_{W}$(x) of the gas mixture CH$\text{}_{3}$CN+OCS and CH$\text{}_{3}$CN+H$\text{}_{2}$ are 14.05±0.30 MHz/Tr, 9.15±0.12 MHz/Tr, respectively and the temperature dependence parameters α are -0.90 ± 0.07 and -0.77 ± 0.08.
Źródło:: Acta Physica Polonica A; 1995, 87, 3; 585-597
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Pressure Broadening Measurements of J=6⇒7 Rotational Line of the t-Butyl Cyanide Molecule
Autorzy:: Gierszal, S.
Galica, J.
Miś-Kuźmińska, E.
Powiązania:: https://bibliotekanauki.pl/articles/1887282.pdf
Data publikacji:: 1991-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 33.70.Jg
Opis:: Self-broadened width of J = 6⇒7 rotational line in the ground state of t-butyl cyanide molecule has been measured at room temperature. The measurements of the linewidth as a function of the gas pressure were carried out with home-made spectrometer at the frequency ν$\text{}_{0}$ = 38 498.308 MHz. The mean value of the pressure-broadening coefficient c = 76.9 ± 0.6 MHz Torr$\text{}^{-1}$ was obtained.
Źródło:: Acta Physica Polonica A; 1991, 79, 4; 451-456
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Pressure Broadening of J=1 ← 0 Rotational Line of Fluoroform Caused by Spherical Perturbers
Autorzy:: Gierszal, S.
Galica, J.
Miś-Kuźmińska, E.
Liber, A.
Powiązania:: https://bibliotekanauki.pl/articles/2030715.pdf
Data publikacji:: 2002-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 33.20.Bx
33.20.Sn
Opis:: The foreign-gas broadening parameter was measured for CHF$\text{}_{3}$ molecule interacting with spherical (SF$\text{}_{6}$, CF$\text{}_{4}$, CH$\text{}_{4}$, CCl$\text{}_{4}$) perturbers and the pressure shift parameter of rotational transition J=1 ← 0 in the CHF$\text{}_{3}$ molecule was obtained. For the systems of trifluoromethane molecule and four spherical molecules as perturbers the collision cross-sections were determined. Experimental line width parameters are interpreted using Anderson-Tsao-Curnutte as well as Murphy-Boggs theories. Accounting for the dispersive and inductive interactions the cross-section was determined. The theoretical values are in qualitative agreement with the experimental results, but the absolute values of the measured cross-section were larger than these calculated.
Źródło:: Acta Physica Polonica A; 2002, 101, 6; 805-813
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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