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New technique for the measurement of reaction constants of photochemically produced NaH


Dillmann, M.T.; Motzkus, M.; Pichler, Goran; Kompa K. L.; Hering, P.
New technique for the measurement of reaction constants of photochemically produced NaH // Zeitschrift für Physik D : atoms, molecules & clusters, 41 (1997), 35-41 (međunarodna recenzija, članak, znanstveni)


Naslov
New technique for the measurement of reaction constants of photochemically produced NaH

Autori
Dillmann, M.T. ; Motzkus, M. ; Pichler, Goran ; Kompa K. L. ; Hering, P.

Izvornik
Zeitschrift für Physik D : atoms, molecules & clusters (0178-7683) 41 (1997); 35-41

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Binary diffusion constant; photochemicaly produced NaH; second-order rate

Sažetak
The diffusion of NaH molecules in H2 gas and its reactive loss mechanism are described. The temporal behaviour of photochemically produced NaH in the reactive Na(3p)-H2(v"=2,3) collision system was observed by means of resonance-enhanced coherent anti-Stokes Raman scattering (RECARS). A simple diffusion model applies well in the lower-pressure region (10 mbar). The binary diffusion constant for NaH molecules in H2, D0=0.7 cm2 /sec at 1 atm and 273 K, was determined. At higher pressures (up to 900 mbar), where the influence of diffusion decreases, an unexpectedly rapid decay of the NaH signal is observed. From this time behaviour we identify a new NaH loss mechanism described by a second-order rate equation in NaH.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
00350102

Ustanove
Institut za fiziku, Zagreb

Autor s matičnim brojem:
Goran Pichler, (37152)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus