Time-Resolved Spectroscopy of Polymethine J-Aggregates

Phase - resolved spectroscopy of SAX J 1808

We present new results based on RXTE observations of the millisecond pulsar SAX J1808.4–3658 carried out during the decay of the April 1998 outburst. The X-ray spectrum can be fitted by a two-component model. We interpret the soft component as blackbody emission from a heated spot on the neutron star, and the hard component as coming from Comptonization in plasma heated by the accretion shock a...

Ultrafast Time-Resolved Spectroscopy

Time-resolved fluorescence spectroscopy

Improved two-dimensional J-resolved spectroscopy.

Localised two-dimensional J-resolved spectroscopy (JPRESS) is optimised for the in vivo detection of J-coupled metabolites using magnetic resonance spectroscopy at 3 T. The acquisition of echo signals starts as early as possible (i.e. maximum-echo sampling). This sampling scheme increases sensitivity and decreases overlap of peak tails, hence alleviating baseline problems. Reconstruction issues...

SPECIAL-j-resolved spectroscopy at 7T

Introduction In-vivo proton spectroscopy is a valuable tool that provides additional knowledge about basic metabolic processes for example in the human brain or important diagnostic in formation for various diseases. Unambiguous detection of coupled spin systems like Glutamate, Glutamine or GABA are quite challenging and hard to achieve with regular one dimensional single voxel spectroscopy. Mo...