Several mathematical descriptions of the fluorescence spectra of liquid dye solutions have been proposed [1-6]. Recently we proposed a new one for some liquid coumarin solutions [7], in which we used the concept that the dye molecule, together with the surrounding solvent forms a kind of quasi-molecule. This concept was known for a long time [8]. The total energy of such a quasi-molecule consis...

Kwanghsi Wang and V. McKoy Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125 (Received 1 December 1995) Using N2 2s21 u photoionization as an example, we present the first measurements and calculations of photoion vibrational distributions for an extended energy range (5 # Ek # 230 eV). The results show a striking breakdown of the F...

UV-vis absorption spectrum of internally hydrogen-bonded enol structures 2-(2'-hydroxyphenyl)benzoxazole is calculated for the transitions to first excited state using Franck-Condon approximation and harmonic model vibrations. It shown that structure with hydrogen bond OH...O shifted larger energy by about 0.13 eV compared most stable OH...N. The largest intensity vibronic electronic demonstrat...

It is shown that the transmission line technology can be suitably used for simulating quantum mechanics. Using manageable and at the same time non-expensive technology, several quantum mechanical problems can be simulated for significant tutorial purposes. The electric signal envelope propagation through the line is governed by a Schrödinger-like equation for a complex function, representing th...

We measure electron tunneling in transistors made from C(140), a molecule with a mass-spring-mass geometry chosen as a model system to study electron-vibration coupling. We observe vibration-assisted tunneling at an energy corresponding to the stretching mode of C(140). Molecular modeling provides explanations for why this mode couples more strongly to electron tunneling than to the other inter...

In 2004, Condon and coauthors gave a hierarchical classification of exact RNA structure prediction algorithms according to the generality of structure classes that they handle. We complete this classification by adding two recent prediction algorithms. More importantly, we precisely quantify the hierarchy by giving closed or asymptotic formulas for the theoretical number of structures of given ...

We examine the effects of long-range dipolar forces on metamagnetic transitions and generalize the theory of Condon domains to the case of an itinerant electron system undergoing a first-order metamagnetic transition. We demonstrate that, within a finite range of the applied field, dipolar interactions induce a spatial modulation of the magnetization in the form of stripes or bubbles. Our findi...

An excitation-emission model for the H2 IΠ +/− g −BΣu transition has been developed based on the coronal equilibrium. Within the framework of the adiabatic theory, the vibronic transition probability is calculated instead of the Franck-Condon factor. The ro-vibrational temperatures are evaluated through the experiment carried out in a low-density hollow-cathode plasma. The evaluated temperature...

Claudia Agnini, Jan Backman, Flavia Boscolo-Galazzo, Daniel J. Condon, Eliana Fornaciari, Simone Galeotti, Luca Giusberti, Paolo Grandesso, Lanci, Valeria Luciani, Simonetta Monechi, Giovanni Muttoni, Heiko Pälike, Maria Letizia Pampaloni, Cesare A. Papazzoni, Paul N. Pearson, Johannes Pignatti, Isabella Premoli Silva, Raffi, Domenico Rio, Lorenzo Rook, Diana Sahy, David J.A. Spofforth, Cristin...