Microwave spectroscopy ppt

MMIICCRROOWWAAVVEE SSPPEECCTTRROOSSCCOOPPYY Prof. Summary of information from mmiiccrroowwaavvee ssppeeccttrroossccooppyy IItt iiss mmaaiinnllyy . III Sem) Applied Physics BBAU, Lucknow 1. H-Cl, and C=O give rotational spectrum (microwave active). Microwave Spectroscopy , Reviews of Modern Physics, Volume 2 Number .

Gas phase molecules and radicals.

How does Microwave relate to other spectroscopies Different types of motion Translational Vibrational Rotational.

Microwave (MW) spectroscopy has the potential to be used in process analysis for the monitoring and control of indus- trial processes. Microwaves are also used for spin-flips of electrons in magnetic fields (ESR or EPR), important for free radicals and transition . Max- Planck-Institut f ¨ur Sonnensystemforschung. It is the rotational analog of mass. Although rotational spectra of small molecules, e. HI, can be examined by optical methods in the distant infrare the frequency of the rotational transitions is shifted to the range of HF spectroscopy in molecules with large moments of inertia.

For this reason, rotational spectroscopy is often called microwave spectroscopy. Introduction and experimental methods. Simple absorption spectrograph. Fourier transform spectrometer. FTMW spectroscopy is analogous to that used to describe FT-NMR spectroscopy.

The behaviour of the evolving system is described by optical Bloch equations. First, a short (typically 0-microsecond duration) microwave . Online available information resources on microwave spectroscopy and related spectroscopic techniques. Molecular Rotational Energy Levels and Spectroscopy. Separations of rotational energy levels correspond to the microwave region of the electromagnetic spectrum. This condition is known as the gross selection rule for microwave , or pure rotational, spectroscopy.

Application of microwave spectroscopy to chemical analysis. Another chunk of lecture on molecular symmetry and spectroscopy : this bit is the introduction to the spectroscopy that arises from molecular rotation. The history and development of microwave spectroscopy and nuclear magnetic resonance (NMR) spectroscopy have much in common.

In this Account, we discuss the less widely appreciated connections between the parameters measured using the two techniques. Selected examples from our laboratory .