Results 351 to 360 of about 469,777 (370)

Rotational transitions and electric dipole moment of fluorocarbene, HCF

Journal of Molecular Structure, 2000
Abstract Microwave optical double resonance was used to determine the electric dipole moment components along the axes of inertia of the HCF molecule. The values are μ a =0.043(5) D, and μ b =1.402(6) D. Some of the rotational and centrifugal distortion constants, previously determined from Doppler limited optical spectra, were obtained with ...
M. Wagner, W. Hüttner, M Prohaska, M. Gamperling, D Braun   +4 more
openaire   +2 more sources

Transition dipole moment of InAs/InGaAs quantum dots from experiments on ultralow-threshold laser diodes

, 2000
Semiconductor ultralow-threshold InAs quantum-dot lasers are investigated operating at 1230–1250 nm at room temperature (laser threshold range is of 16–83 A/cm2 for ground-state emission). The dependence of gain on current is derived from measurements of
P. Eliseev, H. Li, A. Stintz, G. Liu, T. Newell, K. Malloy, L. Lester   +6 more
semanticscholar   +1 more source

Calculation of the potential energies and transition dipole moments of the CdHg pair

Chemical Physics Letters, 1992
Abstract Potential energies for the ground state and several excited states of the CdHg system have been calculated using the MRCI(SD) procedure for the valence electrons, while all the core electrons are represented by semi-empirical l -dependent pseudopotentials. The effect of spin—orbit coupling has not been investigated.
Heinzwerner Preuss, E. Czuchaj, F. Rebentrost, Hermann Stoll   +3 more
openaire   +2 more sources

Measurement of the electronic transition dipole moment by Autler-Townes splitting: Comparison of three- and four-level excitation schemes for the Na2AΣu+1−XΣg+1 system

, 2006
We present a fundamentally new approach for measuring the transition dipole moment of molecular transitions, which combines the benefits of quantum interference effects, such as the Autler-Townes splitting, with the familiar R-centroid approximation ...
E. Ahmed, A. Hansson, P. Qi, T. Kirova, A. Lazoudis, S. Kotochigova, A. Lyyra, L. Li, J. Qi, S. Magnier   +9 more
semanticscholar   +1 more source

Variational Upper and Lower Bounds to Dipole Transition Moments

Physical Review Letters, 1970
Electric-dipole transition moments are calculated by a variational procedure which gives rigorous upper and lower bounds even though the exact wave functions are unknown. The method is applied to the lowest optical transition ($1s\ensuremath{\sigma}\ensuremath{\rightarrow}2p\ensuremath{\sigma}$) of the hydrogen molecule ion, with satisfactory results.
openaire   +2 more sources

Precise determination of electric dipole moment in atomic transitions

AIP Conference Proceedings, 1996
Most conventional methods of determining the dipole moment μ are unsatisfactory when applied to transitions between degenerate levels; this is because the overlapping of transitions among magnetic sub‐levels modifies the photo‐excitation behavior in a complex way. To overcome this difficulty, two novel methods of determination are presented.
Tadashi Yoshida, Akira Kuwako, Itaru Yoguchi, Takashi Watanabe   +3 more
openaire   +2 more sources

Configuration mixing effects on molecular dipole transition moments

Chemical Physics Letters, 1974
Abstract The behavior of dipole transition matrix elements between adiabatic eigenstates of diatomic molecules is explored in the region of large configuration mixing. It is demonstrated that the matrix element has a lorentzian shape as a function of internuclear distance. The effect of this shape on the spectrum of LiH is investigated.
Michael Oppenheimer, Michael Oppenheimer, K. Kirby Docken, K. Kirby Docken   +3 more
openaire   +2 more sources

Lifetimes and transition dipole moment functions of NaK low lying singlet states: Empirical and ab initio approach

, 1998
The paper presents experimental D 1∏ state lifetime τv′J′ data and develops empirical and ab initio approaches concerning D 1∏ and B 1∏ lifetimes, as well as D 1∏–X 1∑+, B 1∏–X 1∑+ and D 1∏–A 1∑+ transition dipole moment functions μ(R) of the NaK ...
M. Tamanis, M. Auzinsh, I. Klincare, O. Nikolayeva, R. Ferber, A. Zaitsevskii, E. Pazyuk, A. Stolyarov   +7 more
semanticscholar   +1 more source

Resolution of three optically active components of the transition dipole moment for 249 nm photodissociation of ICN

, 1993
Cyanogen iodide (ICN) has been photodissociated at 249 nm. The CN(X 2Σ+) photofragments were probed by laser induced fluorescence (LIF) using multiple distinct excitation–detection geometries, allowing the extraction of bipolar moments describing the ...
J. Black
semanticscholar   +1 more source

Quantitative laser-induced fluorescence spectroscopy of the CF A2Σ+-X2Π transition: Electronic transition dipole moment function and predissociation

, 1996
Several previously unmeasured aspects of the quantitative spectroscopy of the CF A2Σ+−X2Π transition have been investigated experimentally. Ground state CF radicals were prepared in an rf discharge chamber and laser-induced fluorescence (LIF) was excited
J. Booth, G. Hancock, M. Toogood, K. McKendrick   +3 more
semanticscholar   +1 more source