Autor: Kosarzewski, J. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Observation and Properties of the van der Waals Dimer Ar···HCCCN Produced in Electrical Discharge
Autorzy:: Desyatnyk, O.
Kosarzewski, J.
Kisiel, Z.
Powiązania:: https://bibliotekanauki.pl/articles/2036980.pdf
Data publikacji:: 2003-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 33.15.Dj
33.15.Mt
33.15.Pw
33.20.Bx
36.40.Mr
Opis:: The weakly bound van der Waals dimer between a molecule of cyanoacetylene and an argon atom was observed by rotational spectroscopy of supersonic expansion. Cyanoacetylene was generated in situ from vinyl cyanide precursor by means of a high voltage discharge just downstream of the expansion nozzle. Both $\text{}^{b}$R- and $\text{}^{b}$Q-type rotational transitions were measured and rotational, centrifugal distortion, and nuclear quadrupole splitting constants were determined. Analysis of the data shows that ground state geometry of the dimer is characterised by R$\text{}_{cm}$=3.65Å andθ=94.9º, with the Ar atom shifted from the position above the cyanoacetylene centre of mass in the direction of the CN group.
Źródło:: Acta Physica Polonica A; 2003, 104, 5; 415-424
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Identification of Trace 2-Chloropropene with a New Chirped Pulse Microwave Spectrometer
Autorzy:: Kisiel, Z.
Kosarzewski, J.
Powiązania:: https://bibliotekanauki.pl/articles/1033441.pdf
Data publikacji:: 2017-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: chirped pulse
Fourier transform microwave
supersonic expansion
millimetre wave
rotational spectroscopy
Opis:: The design of a new chirped pulse, Fourier-transform microwave spectrometer for recording broadband rotational spectra of supersonic expansion samples is described. The spectrometer can record spectral windows of width of up to 2.2 GHz over the 2-18 GHz frequency region. It is complemented by a new FFT program with several novel features. Tests of the spectrometer revealed the presence of an initially unknown volatile trace molecule in a sample of 2,2-dichloropropane (DCP). The broadband nature of the new spectrometer allowed rapid assignment of the new species as 2-chloropropene, CH₃CCl=CH₂ (2CP). Additional mm wave measurements combined with analysis of previous DCP spectra up to 311 GHz allow us to report the hitherto most precise spectroscopic constants for 2CP.
Źródło:: Acta Physica Polonica A; 2017, 131, 2; 311-317
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Nuclear Quadrupole Coupling Tensor of Ch$\text{}_{2}$Cl$\text{}_{2}$: Comparison of Quadrupolar and Structural Angles in Methylene Halides
Autorzy:: Kisiel, Z.
Kosarzewski, J.
Pszczółkowski, L.
Powiązania:: https://bibliotekanauki.pl/articles/1967844.pdf
Data publikacji:: 1997-09
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 33.15.Dj
33.15.Pw
33.20.Bx
Opis:: Nuclear quadrupole hyperfine structure in 2$\text{}_{1,2}$ ← 3$\text{}_{0,3}$ and 1$\text{}_{1,1}$ ← 2$\text{}_{0,2}$ rotational transitions of CH$\text{}_{2}^{35}$Cl$\text{}_{2}$ at 9.2 and 15.9 GHz, respectively, was measured with a newly constructed pulsed supersonic beam, cavity Fourier transform microwave spectrometer. All components of nuclear quadrupole splitting tensors of the chlorine nuclei in inertial and in principal quadrupole axes were determined. It is shown that in methylene halide molecules nuclear quadrupole information leads to a value for ∠(XCX) which is systematically larger than ∠(XCX) defined by the positions of the nuclei. Some novel features of the spectrometer are also described.
Źródło:: Acta Physica Polonica A; 1997, 92, 3; 507-516
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja