Bound state spectroscopy of NH–He

0 Laser spectroscopy of simple atoms and precision tests of bound state QED

We present a brief overview of precision tests of bound state QED and mainly pay our attention to laser spectroscopy as an appropriate tool for these tests. We particularly consider different precision tests of bound state QED theory based on the laser spectroscopy of optical transitions in hydrogen, muonium and positronium and related experiments.

Reprint of: Femtosecond transition-state spectroscopy of iodine: From strongly bound to repulsive surface dynamics

Article history: Available online 21 August 2013 The application of femtosecond transition-state spectroscopy (FTS) to molecular iodine is reported. The real-time motion of wave packets prepared coherently in the bound B state is observed. In addition, the motion is probed near and above the dissociation limit for the reaction: I2 ? I (P3/2) + I⁄(2P1/2). FTS measurements of the dynamics on repu...

Conformational state of the SecYEG-bound SecA probed by single tryptophan fluorescence spectroscopy.

The SecYEG complex is a membrane-embedded channel that permits the passage of precursor proteins (preproteins) across the inner membrane of Escherichia coli. SecA is a molecular motor that associates with the SecYEG pore and drives the stepwise translocation of preproteins across the membrane through multiple cycles of ATP binding and hydrolysis. We have investigated the conformational state of...

Bound State Problem Solution

Second bound state of PsH.

The existence of a second bound state of PsH that is electronically stable and also stable against positron annihilation by the normal 2gamma and 3gamma processes is demonstrated by explicit calculation. The state can be found in the ;{2,4}S;{o} symmetries with the two electrons in a spin-triplet state. The binding energy against dissociation into the H(2p)+Ps(2p) channel was 7.03 x 10;(-4) har...