3 edition of Picosecond spectroscopic studies of vibrational relaxation in liquids using infrared excitation found in the catalog.
Picosecond spectroscopic studies of vibrational relaxation in liquids using infrared excitation
Robert Bruce Weisman
Written in English
|LC Classifications||Microfilm 69142|
|The Physical Object|
|Pagination||v, 112 l.|
|Number of Pages||112|
|LC Control Number||92895713|
Up to now, however, there have been very few studies on the vibrational relaxation of the NH stretching vibration–37 In this paper, we report a study on the IVR dynamics of the NH 2 stretching vibration of aniline in a supersonic beam by using a picosecond IR-UV pump-probe spectroscopy. Aniline is one of the most fundamental aromatic molecules. Femtosecond infrared coherent excitation of liquid phase vibrational population distributions (v > 5) T. Witte a, J.S. Yeston b, M. Motzkus a, E.J. Heilweil b,*, K.-L. Kompa a,* a Max-Planck-Instit€utf€r Quantenoptik, Hans-Kopfermann-Str. 1, Garching, Germany b Optical Technology Division, National Institute of Standards and Technology, Bureau Drive, B Building MS
Get this from a library! Applications of Picosecond Spectroscopy to Chemistry. [K B Eisenthal] -- With the development of lasers that can generate light 11 14 pulses ranging from - sec duration, and capable of 13 peak powers in excess of 10 watts scientists have been able to investigate. Coupling between high frequency vibrational modes has been observed with transient IR absorption and picosecond Raman spectroscopies [ 9- 12 1. Recent temperature-dependent studies of vibrational relax- ation in liquids offer insights into the role of phonons in vibrational relaxation [
A characteristic time scale of order ps has been observed by several workers in picosecond spectroscopy experiments on iodine recombination in liquid CCl 4 and other solvents. This time scale has been thought to be associated with the diffusive relative motion, prior to actual recombination, of photodissociated I atoms. In this paper, we point out that extensive vibrational deactivation of. The vibrational spectra of biomolecules could in principle image cells and tissue without added markers. Practically, several technical problems need to be overcome to achieve sufficient imaging depths, resolution, and data acquisition speed. Cheng and Xie review emerging bioimaging methods for use in the lab and the clinic. Science, this issue p. [/] ### BACKGROUND.
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Bulk water infrared pump-probe results. To study VER in bulk H 2 O, we use a narrow-band infrared excitation pulse to excite a subset of H 2 Cited by: Infrared spectroscopy (IR spectroscopy or vibrational spectroscopy) is the measurement of the interaction of infrared radiation with matter by absorption, emission, or is used to study and identify chemical substances or functional groups in solid, liquid, or gaseous forms.
The method or technique of infrared spectroscopy is conducted with an instrument called an infrared. Vibrational Spectroscopy provides a vehicle for the publication of original research that focuses on vibrational spectroscopy.
This covers infrared, near-infrared and Raman spectroscopies and publishes papers dealing with developments in applications, theory, techniques and instrumentation. The topics covered by the journal include. Vibrational energy relaxation (VER) of neat methanol at ambient temperature is studied with a three-dimensional vibrational spectroscopy technique.
The first two dimensions are represented by a time series of incoherent anti-Stokes Raman spectra at a given mid-IR pump frequency. The third dimension involves changing the mid-IR pump frequency within the manifold of CH and OH stretching Cited by: Abstract.
The purpose of the present lecture course is to review infrared and spontaneous Raman studies of vibrational relaxation in liquids. This process is relative to internal degrees of freedom of a molecular liquid and is generated by a large variety of intermolecular forces, the dipole-dipole, dipole-induced dipole, dispersion, Pauli repulsion forces and hydrogen by: Ultrafast anti-Stokes Raman spectroscopy of liquid nitromethane (NM) after mid-IR excitation in the C−H stretching region ( cm-1) is used to study vibrational energy redistribution with 1 ps.
Using picosecond Raman spectroscopy we investigated the relaxation of elementary excitations in heavily underdoped Bi We observed super-linear be.
This book brings together many different relaxation phenomena in liquids under a common umbrella and provides a unified view of apparently diverse phenomena. It aligns recent experimental results obtained with modern techniques with recent theoretical developments.
Such close interaction between experiment and theory in this area goes back to the works of Einstein, Smoluchowski, Kramers' and. Time-Resolved Vibrational Spectroscopy covers the proceedings of the International Conference on Time-Resolved Vibrational Spectroscopy, convened in Lake Placid, New York on AugustThis book is organized into six sections encompassing 51 chapters.
The population lifetime of the amide I vibration (v 10 fundamental, ca. cm-1) in the protein myoglobin in D 2 O has been determined by picosecond infrared pump- probe spectroscopy using the Stanford mid-infrared free electron laser to be +/- ps.
In a glass forming mixture of deuterated glycerol and D 2 O, the vibrational lifetime was found to increase from +/- ps at K. A three-dimensional vibrational spectroscopy technique with mid-IR pumping and incoherent anti-Stokes Raman probing is used to study vibrational energy relaxation (VR) in hydrogen-bonded liquids.
New results on spectral diffusion and vibrational relaxation of OH stretching V oh of water are presented. Applications of Picosecond Spectroscopy to Chemistry. Editors (view affiliations) Kenneth B. Eisenthal; Book. 21 Citations; Vibrational Relaxation. Front Matter. These ultrashort laser pulses provide a powerful tool for the study of chemical phenomena at the most fundamental level.
Many of the elementary processes of importance in. Ultrafast anti-Stokes Raman scattering after intense mid-IR excitation is used to study vibrational energy relaxation (VER) and vibrational cooling (VC) in neat liquid acetonitrile. The mid-IR pulse ( cm-1) excites a combination of C−H stretching fundamentals and C−H bending overtones, which are coupled by Fermi resonance.
Vibrational excitation decays from the pumped C−H stretch in. ation, and orientational relaxation of a vibrational transition in a glass-forming organic liquid are presented.
TheT1u CO stretching vibration ~ cm21. of tungsten hexacarbonyl @W~CO!6# in 2-methylpentane~2-MP. is observed from K to 10 K using picosecond infrared transient grating and pump-probe experiments. This work is complementary.
A three-dimensional vibrational spectroscopy technique with mid-IR pumping and incoherent anti-Stokes Raman probing is used to study vibrational energy relaxation (VR) in hydrogen-bonded liquids. Two-dimensional infrared spectroscopic study of cytochrome c peroxidase activity in deep eutectic solvent “ Frequency-frequency correlation functions and apodization in two-dimensional infrared vibrational echo spectroscopy: A new approach “ Vibrational dynamics of carbon-monoxide at the active-site of myoglobin—Picosecond.
This book has its or1g1n in a NATO Summer School organized from June 25 to July 7in Menton, France. The purpose of this School was a comparative study of the various aspects of vibra tional spectroscopy in molecular liquids and solids.
This field has been rapidly expanding in the last decade; unfortunately, its development took place independently for liquids and for solids. In these.
We report the first coherent excitation of intramolecular vibrational modes via the nonlinear interaction of a TeraHertz (THz) light field with molecular liquids. A terahertz-terahertz-Raman pulse sequence prepares the coherences with a broadband, high-energy, (sub)picosecond terahertz pulse, that are then measured in a terahertz Kerr effect spectrometer via phase-sensitive, heterodyne.
Fast energy delocalization after vibrational relaxation of a deuterated zeolite hydroxyl, M. BONN, M.J.P. BRUGMANS, A.W. KLEYN AND R.A. VAN SANTEN, Infrared picosecond transient hole-burning studies of the effect of hydragen bonds on the vibrational lineshape, With infrared spectroscopy the vibrational absorption spectrum can.
This chapter uses a three-dimensional vibrational spectroscopy technique with mid-IR pumping and incoherent anti-Stokes Raman probing to study vibrational energy relaxation (VR) in hydrogen bonded liquids. New results on spectral diffusion and vibrational relaxation.
A femtosecond mid-infrared pump-probe study of the vibrational and orientational dynamics of the OH-stretching mode of HDO dissolved in D2O is presented. The orientational relaxation of the HDO molecules was observed to occur on either a very slow or a very fast time scale, with associated time constants of τ R = 13 picoseconds and τ R = picosecond.
The frequency fluctuations were measured using two-dimensional infrared (2D-IR) spectrosc In this technique a vibration is excited with a femtosecond infrared. Vibrational strong coupling has emerged as a promising route for manipulating the reactivity of molecules inside infrared cavities.
We develop a full-quantum methodology to study the unitary dynamics of a single anharmonic vibrational mode interacting with a quantized infrared .