نتایج جستجو برای: rotational band
تعداد نتایج: 163747 فیلتر نتایج به سال:
The rotational spectrum of protonated carbonyl sulfide, HSCO(+), has now been detected in the centimeter-wave band in a molecular beam by Fourier transform microwave spectroscopy. Rotational and centrifugal distortion constants have been determined from transitions in the K(a)=0 ladder of the normal isotopic species, and DSCO(+) and H(34)SCO(+). HSCO(+) is systematically more abundant by a fact...
The pure rotational spectrum of the NO dimer, (14N16O)2, has been studied in the 225-400 GHz millimeter-wave region by means of direct absorption in a supersonic jet expansion. Previously, only 4 rotational transitions of (NO)2 had been measured in the microwave region. To these, we have added 66 new millimeter-wave transitions with values of J ranging from 4 to 16 and of Ka from 2 to 7. Most t...
Infrared absorption spectroscopy of few hundred H+(3) ions trapped in a 22-pole ion trap is presented using chemical probing as a sensitive detection technique down to the single ion level. By exciting selected overtone transitions of the (v(1)=0,v(2) (l)=3(1))<--(0,0(0)) vibrational band using an external cavity diode laser an accurate diagnostics measurement of the effective translational and...
In the high-performance athlete, acquired thickening of the posterior joint capsule is a proposed etiology for glenohumeral internal rotational deficit (GIRD). The purpose of this study was to present our MR arthrographic imaging observations of posterior capsular thickening in professional baseball players who present with reduced throwing velocity related to pain and clinical findings of inte...
A novel multiresolution block motion estimation algorithm for video coding is proposed in this paper. The algorithm estimates motion vectors in a coarse-tone scheme, using the wreath product transform (WPT). All of its sub-band coeecients are used to predict the motion vectors, generating an estimate close to that obtained from the standard exhaustive search method. The multiplication free char...
The laser-induced fluorescence spectrum of jet-cooled L-tyrosine exhibits more than 20 vibronic bands in the 35450-35750 cm(-1) region. We attribute these bands to eight conformers by using results of UV-UV hole-burning spectroscopy. These isomers are classified into four groups; each group consists of two rotational isomers that have a similar side-chain conformation but different orientations...
The rotationally resolved high-resolution fluorescence excitation spectrum of the 0-0 band in the S(1)← S(0) electronic excitation of thioanisole was observed using the techniques of a collimated supersonic jet and a single-mode ultraviolet laser for the first time. High accurate rotational constants for the S(0) and the S(1) states have been determined by precisely calibrated transition energi...
Single rovibronic level excitation has been demonstrated for a molecule representing the statisticallimit of a nonradiative electronic relaxation process. Resolution of the complex 14Ö two-photon band of benzene was possible after elimination of the Doppler broadening in a Doppler-free two-photon absorption process with narrow bandwidth pulsed laser light and allowed for selective excitation of...
The rotationally resolved spectrum of the @ band of the S, + So electronic transition of the benzene-N, van der Waals complex has been recorded and 119 transitions assigned. The G,H,.N, complex, produced in a pulsed molecular beam, was detected by mass-selected two-photon twecolour ionization employing a high-resolution (Av uv= 100 MHz, fwhm) pulsed-amplified cw laser for the resonant intermedi...
We present the results of a study to determine the co-evolution of the virial and stellar masses for a sample of 83 disk galaxies between redshifts z = 0.2 − 1.2. The virial masses of these disks are computed using measured maximum rotational velocities from Keck spectroscopy and scale lengths from Hubble Space Telescope imaging. We compute stellar masses based on stellar population synthesis m...
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