Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

High-Resolution Measurements of HBr Transitions in the First Overtone Band Using Tunable Diode Lasers.

Chou1, Baer, Hanson

  • 1High Temperature Gasdynamics Laboratory, Stanford University, Stanford, California, 94305-3032

Journal of Molecular Spectroscopy
|February 9, 2000
PubMed
Summary

High-resolution spectroscopy of Hydrogen Bromide (HBr) reveals new data on spectral line intensities and self-broadening coefficients. These findings offer more accurate parameters for HBr absorption lines than previously available.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The effects of omega-3 fatty acid diet enrichment on wound healing.

Veterinary dermatology·2021
Same author

The pharmacology of chia chu tao, a Chinese oleander.

Medical abstracts·2010
Same author

Carbon Monoxide, Nitric Oxide, and Nitrogen Dioxide Levels in Gas Ovens Related to Surface Pinking of Cooked Beef and Turkey.

Journal of agricultural and food chemistry·2001
Same author

27. PET Image Interpretation. Attenuation-Corrected (ATN) Vs Non-Attenuation Corrected (NATN) Images.

Clinical positron imaging : official journal of the Institute for Clinical P.E.T·2001
Same author

Wavenumber Measurements of CO(2) Transitions in 1.5-µm Atmospheric Window Using an External-Cavity Diode Laser.

Journal of molecular spectroscopy·2001
Same author

Genetic strategies to enhance penicillin acylase production in Escherichia coli.

Enzyme and microbial technology·2000

Area of Science:

  • Molecular Spectroscopy
  • Quantum Chemistry
  • Physical Chemistry

Background:

  • Accurate spectroscopic data for molecules like Hydrogen Bromide (HBr) is crucial for atmospheric modeling and industrial applications.
  • Existing databases may contain discrepancies that necessitate experimental validation.

Purpose of the Study:

  • To precisely measure the absorption lineshapes, intensities, and self-broadening coefficients of specific transitions in HBr.
  • To compare experimental results with existing literature and database values, such as those in HITRAN.
  • To investigate the influence of nuclear electric quadrupole interactions on HBr lineshapes at low pressures.

Main Methods:

  • High-resolution absorption spectroscopy using distributed feedback diode lasers near 1.95 and 2.00 µm.

Related Experiment Videos

  • Recording spectra of HBr at various pressures (10-100 Torr) at room temperature.
  • Fitting spectral data with Voigt profiles to determine line parameters.
  • Modeling low-pressure spectra with Gaussian profiles incorporating hyperfine constants.

    • Main Results:

    • Measured line intensities for P(2) and R(7) transitions were found to be approximately 11% and 16% higher than HITRAN values.
    • The self-broadening coefficient for the P(2) transition was approximately 14% lower than the HITRAN value.
    • Nuclear electric quadrupole interactions were successfully modeled in low-pressure HBr spectra.

    Conclusions:

    • The study provides refined spectroscopic parameters for HBr, improving upon existing database entries.
    • Experimental validation highlights potential inaccuracies in current HBr spectroscopic data.
    • The detailed analysis contributes to a better understanding of molecular interactions and spectral line shapes.