Infrared laser spectroscopy of free radicals and ions. III. The
            v
            3
            band of NF
            2
            (X̃
            2
            B
            1
            )

The v 3 band of NF 2 (X̃ 2 B 1 ) has been measured at high resolution by using tunable diode lasers. Rotational, distortion and spin-rotation constants have been derived for the v 3 = 1 state by using ground state constants derived earlier from analysis of the v 1 band. The position of the band centre, not previously measured, is 942.481 53(30) cm -1 . Analysis of the v 1 — v 3 Coriolis interaction yields the Coriolis coupling constant ξ 13 = 0.698(10).

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Infrared laser spectroscopy of free radicals and ions. II. Analysis of the v 1 band of NF 2 (X͂ 2 B 1 )

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1984.0041 ◽

1984 ◽

Vol 392 (1803) ◽

pp. 445-455 ◽

Cited By ~ 9

Keyword(s):

Free Radicals ◽

Preliminary Analysis ◽

Diode Lasers ◽

Spin Rotation ◽

Coriolis Interaction ◽

Quantum Numbers ◽

Rotational Distortion ◽

Infrared Laser Spectroscopy ◽

Tunable Diode Lasers ◽

Rotation Parameters

Almost three hundred absorption lines of the v 1 fundamental band of NF 2 (X͂ 2 B 1 ) have been assigned by using high resolution infrared spectroscopy with tunable diode lasers. The spectrum resembles a perpendicular band of a prolate symmetric top with Q-branches which have high K a quantum numbers presenting the most distinguishable features. A combined fit of nearly one hundred infrared lines and eighteen microwave transitions yields a new set of rotational, distortion and spin-rotation parameters for the v 1 = 1 level. The band centre is 1074.9897(8) cm -1 . A preliminary analysis of the v 1 - v 3 Coriolis interaction through the inertial defect is presented.

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Infrared laser spectroscopy of free radicals and ions. I. The fundamental band of NF(X 3 Ʃ - )

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1983.0104 ◽

1983 ◽

Vol 389 (1796) ◽

pp. 205-212 ◽

Cited By ~ 15

Keyword(s):

Free Radicals ◽

Free Radical ◽

Absorption Band ◽

Diode Laser ◽

Ground State ◽

Tunable Diode Laser ◽

Laser Spectrometer ◽

Diode Laser Spectrometer ◽

A Value ◽

Infrared Laser Spectroscopy

The fundamental absorption band of the NF free radical in its 3 Ʃ - ground state has been measured using a tunable diode laser spectrometer. The positions of fifty-one transitions in both P and R branches were accurately calibrated against reference gas lines. Analysis of the spectrum yields a value for the band centre of 1123.2788 (30) cm -1 and equilibrium rotational parameters: B e 1.205679 (160) cm -1 ; α e 0.014889 (160) cm -1 ; D e 5.6 (8) x 10 -6 cm -1 .

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Fluorescence diagnostics for atmospheric pressure plasmas using tunable diode lasers

10.2514/6.1992-679 ◽

1992 ◽

Author(s):

D. BAER ◽

H. CHANG ◽

R. HANSON

Keyword(s):

Atmospheric Pressure ◽

Diode Lasers ◽

Atmospheric Pressure Plasmas ◽

Tunable Diode Lasers ◽

Fluorescence Diagnostics

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Magnetic properties of verdazyl free radicals. VII. π‐Bridged verdazyl biradicals with triplet ground state

The Journal of Chemical Physics ◽

10.1063/1.1682306 ◽

1974 ◽

Vol 61 (6) ◽

pp. 2294-2296 ◽

Cited By ~ 29

Author(s):

Nagao Azuma ◽

Kazuhiko Ishizu ◽

Kazuo Mukai

Keyword(s):

Magnetic Properties ◽

Free Radicals ◽

Ground State ◽

Triplet Ground State

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SUPER SYMMETRY IN STRONG AND WEAK INTERACTIONS

International Journal of Modern Physics E ◽

10.1142/s021830131001473x ◽

2010 ◽

Vol 19 (02) ◽

pp. 263-280

Author(s):

U. V. S. SESHAVATHARAM ◽

S. LAKSHMINARAYANA

Keyword(s):

Ground State ◽

Crucial Role ◽

Weak Interactions ◽

Light Quark ◽

Fermion Mass ◽

Coupling Constant ◽

Mass Generation ◽

Super Symmetry ◽

Charged Boson ◽

Charged Mesons

For strong interaction two new fermion mass units 105.32 MeV and 11450 MeV are assumed. Existence of "Integral charge quark bosons", "Integral charge effective quark fermions", "Integral charge (effective) quark fermi-gluons" and "Integral charge quark boso-gluons" are assumed and their masses are estimated. It is noticed that, characteristic nuclear charged fermion is Xs · 105.32 = 938.8 MeV and corresponding charged boson is Xs(105.32/x) = 415.0 where Xs = 8.914 is the inverse of the strong coupling constant and x = 2.26234 is a new number by using which "super symmetry" can be seen in "strong and weak" interactions. 11450 MeV fermion and its boson of mass = 11450/x = 5060 MeV plays a crucial role in "sub quark physics" and "weak interaction". 938.8 MeV strong fermion seems to be the proton. 415 MeV strong boson seems to be the mother of the presently believed 493,496 and 547 MeV etc, strange mesons. With 11450 MeV fermion "effective quark-fermi-gluons" and with 5060 MeV boson "quark boso-gluon masses" are estimated. "Effective quark fermi-gluons" plays a crucial role in ground state charged baryons mass generation. Light quark bosons couple with these charged baryons to form doublets and triplets. "Quark boso-gluons" plays a crucial role in ground state neutral and charged mesons mass generation. Fine and super-fine rotational levels can be given by [I or (I/2)] power(1/4) and [I or (I/2)] power(1/12) respectively. Here, I = n(n+1) and n = 1, 2, 3, ….

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Search for narrow-band-noise modulations of the infrared transmission of blue bronze

Journal de Physique IV (Proceedings) ◽

10.1051/jp4:20020363 ◽

2002 ◽

Vol 12 (9) ◽

pp. 85-86

Author(s):

R. C. Rai ◽

V. A. Bondarenko ◽

J. W. Brill

Keyword(s):

Absorption Coefficient ◽

Narrow Band ◽

Diode Lasers ◽

Infrared Transmission ◽

Narrow Band Noise ◽

Band Noise ◽

Tunable Diode Lasers ◽

Upper Limits ◽

Blue Bronze

We have searched for narrow-band-noise (NBN) modulations of the infrared transmission in blue bronze, using tunable diode lasers. No modulations were observed, giving an upper limits for NBN changes in the absorption coefficient of $\Delta \alpha_{NBN} < 0.3 $ / cm ($\approx \alpha/2000$). The implication of these results on proposed CDW properties and NBN mechanisms are discussed.

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High Resolution Infrared Spectra of the ν2 and 2ν1 Bands of 14N16O2

Canadian Journal of Physics ◽

10.1139/p75-240 ◽

1975 ◽

Vol 53 (19) ◽

pp. 1902-1926 ◽

Cited By ~ 39

Author(s):

Aldée Cabana ◽

Michel Laurin ◽

Walter J. Lafferty ◽

Robert L. Sams

Keyword(s):

High Resolution ◽

Infrared Spectra ◽

Ground State ◽

Equilibrium Structure ◽

Coriolis Interaction ◽

Rotational Constants ◽

Average Structures

The infrared spectra of two B type bands, ν2 and 2ν1, of 14N16O2 have been recorded under high resolution. Ground state combination differences from these bands have been combined with combination differences obtained in previous studies and eight pure rotational microwave transitions to yield improved ground state rotational constants. Upper state constants and band centers for the ν2 and 2ν1 bands are also reported. The 2ν1 band contains internal intensity anomalies believed to arise from a weak Coriolis interaction with the much stronger ν1 + ν3 band. Equilibrium rotational constants have been calculated. The equilibrium structure of the molecule is: rc = 1.1945 ± 0.0005 Å and Θc = 133.85 ± 0.10°. For the sake of comparison, effective, substitution, and average structures are also reported.

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