Direct observation of weak state mixing in highly vibrationally excited acetylene

Utz, A. L.; Carrasquillo, E.; Tobiason, J. D.; Crim, F. Fleming

doi:10.1016/0301-0104(94)00315-2

Cited by 48 publications

(40 citation statements)

References 59 publications

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“…[34][35][36][37] This complements other LIF-detected IR-UV DR studies of C 2 H 2 and its isotopomers in overtone/combination levels with high vibrational energy (G v > 6500 cm -1 ) [38][39][40][41][42][43] and fundamental and lower-energy overtone or combination levels (G v e 6500 cm -1 ). [44][45][46][47][48][49] Several related LIF-detected Raman-UV DR experiments have also been performed.…”

Section: Introductionsupporting

confidence: 51%

Rovibrational Energy Transfer in the 4ν_CHManifold of Acetylene Viewed by IR−UV Double Resonance Spectroscopy. 2. Perturbed States withJ= 17 and 18

et al. 2005

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Collision-induced state-to-state molecular energy transfer between rovibrational states in the 12,700 cm(-1) 4nu(CH) manifold of the electronic ground state X of acetylene (C(2)H(2)) is monitored by time-resolved infrared-ultraviolet double resonance (IR-UV DR) spectroscopy. Rotational J-states associated with the (nu(1) + 3nu(3)) or (1 0 3 0 0)(0) vibrational combination level, initially prepared by an IR pulse, are probed at approximately 299, approximately 296, or approximately 323 nm with UV laser-induced fluorescence via the Alpha electronic state. The rovibrational J-states of interest belong to a congested manifold that is affected by anharmonic, l-resonance, and Coriolis couplings, yielding complex intramolecular dynamics. Consequently, collision-induced rovibrational satellites observed by IR-UV DR comprise not only regular even-DeltaJ features but also supposedly forbidden odd-DeltaJ features. A preceding paper (J. Phys. Chem. A 2003, 107, 10759) focused on low-J-value rovibrational levels of the 4nu(CH) manifold (particularly those with J = 0 and J = 1) whereas this paper examines locally perturbed states at higher values of J (particularly J = 17 and 18, which display anomalous doublet structure in IR-absorption spectra). Three complementary forms of IR-UV DR experiments (IR-scanned, UV-scanned, and kinetic) are used to address the extent to which intramolecular perturbations influence the efficiency of J-resolved collision-induced energy transfer with both even and odd DeltaJ.

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Section: Introductionsupporting

confidence: 51%

Rovibrational Energy Transfer in the 4ν_CHManifold of Acetylene Viewed by IR−UV Double Resonance Spectroscopy. 2. Perturbed States withJ= 17 and 18

et al. 2005

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“…The detection of states after a computation can be achieved by applying standard laser diagnostics (for example time resolved IR-spectroscopy [14], laser induced fluorescence spectroscopy [LIF] [15], stimulated emission pumping [SEP] or resonant multi photon ionization…”

mentioning

confidence: 99%

Quantum Computation with Vibrationally Excited Molecules

2002

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A new physical implementation for quantum computation is proposed. The vibrational modes of molecules are used to encode qubit systems. Global quantum logic gates are realized using shaped femtosecond laser pulses which are calculated applying optimal control theory. The scaling of the system is favorable, sources for decoherence can be eliminated. A complete set of one and two quantum gates is presented for a specific molecule. Detailed analysis regarding experimental realization shows that the structural resolution of today's pulse shapers is easily sufficient for pulse formation.

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“…In addition, decades of spectroscopic and theoretical work have resulted in a detailed understanding of the ground state ro-vibrational energy level patterns. 25,33,37,[39][40][41][42][43][44][45][46][47][48][49] The majority of acetylene CET studies have been carried out using pulsed laser pump-probe techniques. In these measurements the first laser is used to excite a single rovibrational level.…”

Section: Introductionmentioning

confidence: 99%

Rotational and vibrational energy transfer in vibrationally excited acetylene at energies near 6560 cm−1

Han

Freel

2011

The Journal of Chemical Physics

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Collisional energy transfer kinetics of vibrationally excited acetylene has been examined for states with internal energies near 6560 cm(-1). Total population removal rate constants were determined for selected rotational levels of the (1,0,1,0(0),0(0)) and (0,1,1,2(0),0(0)) states. Values in the range of (10-18) × 10(-10) cm(3) s(-1) were obtained. Measurements of state-to-state rotational energy transfer rate constants were also carried out for these states. The rotational energy transfer kinetics was found to be consistent with simple energy gap models for the transfer probabilities. Vibrational transfer out of the (0,1,1,2(0),0(0)) state accounted for no more than 16% of the total removal process. Transfer from (1,0,1,0(0),0(0)) to the u-symmetry (0,2,0,3(1),1(-1)), (0,1,1,2(0),0(0)), and (1,1,0,1(1),1(-1)) states was observed. Applying the principle of detailed balance to these data indicated that vibrational transfer to (1,0,1,0(0),0(0)) accounted for ~0.1% of the population loss from (0,2,0,3(1),1(-1)) or (0,1,1,2(0),0(0)), and 3% of the loss from (1,1,0,1(1),1(-1)). Relative rotational transfer probabilities were obtained for transfer to the g-symmetry (1,1,0,2(0),0(0))∕(0,0,2,0(0),0(0)) dyad. These results are related to recent studies of optically pumped acetylene lasers.

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Direct observation of weak state mixing in highly vibrationally excited acetylene

Cited by 48 publications

References 59 publications

Rovibrational Energy Transfer in the 4ν_CHManifold of Acetylene Viewed by IR−UV Double Resonance Spectroscopy. 2. Perturbed States withJ= 17 and 18

Rovibrational Energy Transfer in the 4ν_CHManifold of Acetylene Viewed by IR−UV Double Resonance Spectroscopy. 2. Perturbed States withJ= 17 and 18

Quantum Computation with Vibrationally Excited Molecules

Rotational and vibrational energy transfer in vibrationally excited acetylene at energies near 6560 cm−1

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Direct observation of weak state mixing in highly vibrationally excited acetylene

Cited by 48 publications

References 59 publications

Rovibrational Energy Transfer in the 4νCHManifold of Acetylene Viewed by IR−UV Double Resonance Spectroscopy. 2. Perturbed States withJ= 17 and 18

Rovibrational Energy Transfer in the 4νCHManifold of Acetylene Viewed by IR−UV Double Resonance Spectroscopy. 2. Perturbed States withJ= 17 and 18

Quantum Computation with Vibrationally Excited Molecules

Rotational and vibrational energy transfer in vibrationally excited acetylene at energies near 6560 cm−1

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Product

Resources

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Rovibrational Energy Transfer in the 4ν_CHManifold of Acetylene Viewed by IR−UV Double Resonance Spectroscopy. 2. Perturbed States withJ= 17 and 18

Rovibrational Energy Transfer in the 4ν_CHManifold of Acetylene Viewed by IR−UV Double Resonance Spectroscopy. 2. Perturbed States withJ= 17 and 18