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Experimental setup developed in Grenoble PowerPoint PPT Presentation


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threshold. Laser OFF. 100. -50. 0. 50. Effective Hamiltonian. Experimental setup developed in Grenoble. The 5 n 1 +2 n 2 + n 3 band lying at 7579 cm -1. The n 1 +2 n 2 +5 n 3 band lying at 7130 cm -1. The n 1 +3 n 2 +5 n 3 band lying at 7686 cm -1.

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Experimental setup developed in Grenoble

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Experimental setup developed in grenoble

threshold

Laser OFF

100

-50

0

50

Effective Hamiltonian

Experimental setup developed in Grenoble

The 5n1+2n2+n3 band lying at 7579 cm-1

The n1+2n2+5n3 band lying at 7130 cm-1

The n1+3n2+5n3 band lying at 7686 cm-1

The 6n1+n3 band lying at 7442 cm-1

6nm/diode

70 DFB laser diodes

The fibered CW-CRDS spectrometer

Spectral region:

1480-1687 nm

(5800-7000 cm-1)

Routine sensitivity 310-10 cm-1

Laser diode

Lambdameter

Optical isolator

Coupler

n=f(T,I)

AO

Modulator

laser ON

Diagonal block

Photodiode

Extradiagonal blocks

The linestrengths are calculated using the following effective transition moment operators :

Effective transition moment operator

CRDS spectra of 16O3 in the range 7000-8000 cm-1 : first measurements and rovibrational assignments of the n1+2n2+5n3 (7130 cm-1), 6n1+n3 (7442 cm-1), 5n1+2n2+n3 (7579 cm-1) and n1+3n2+5n3 (7686 cm-1) bands

Samir Kassi§, Alain Barbe#, M.-R. De Backer-Barilly#, Alain Campargue§, Vladimir G. Tyuterev#

§ Laboratoire de Spectrométrie Physique, UMR CNRS 5588, Université Joseph Fourier, BP 87 -38402 Grenoble, France

# Groupe de Spectrométrie Moléculaire et Atmosphérique, UMR CNRS 6089, Université de Reims Champagne Ardenne, Moulin de la Housse, BP 1039 - 51687 REIMSCedex 2 France

Abstract : Four new bands of 16O3 have been analysed in the CRDS Spectra. Though extremely weak, they are of first importance for the improvement of the Ozone Potential Energy Surface, as they reach energy levels which are higher than 90% of the dissociation energy.(Authors thank VAMDC EU Project for its financial support)

Line position analysis

P Branch (Jup=12-14)

Line position analysis

198 observed transitions (Jmax=25, Kamax=9)  rms = 6.3×10-3 cm-1

Line intensity analysis

257 observed transitions (Jmax=33, Kamax=8)  rms = 4.9×10-3 cm-1

Sv = 2.13×10-25cm/molecule at 296 K

Line intensity analysis

Sv = 5.22×10-25cm/molecule at 296 K

Line position analysis

P branch (Jup=12, 13)

R branch

155 observed transitions (Jmax=25, Kamax=5)  rms = 15.3×10-3 cm-1

Line intensity analysis

Line position analysis

Sv = 5.03×10-26cm/molecule at 296 K

P branch (Jup=13)

R branch

159 observed transitions (Jmax=26, Kamax=4)

 rms = 16.5×10-3 cm-1

(g) : fixed to the ground state values

Line intensity analysis

Sv = 2.68×10-26cm/molecule at 296 K


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