J. Rudati

Detectors for Ultrafast X-ray Experiments at SPPS

The paper describes two detectors designed specifically for the SPPS ultrafast x‐ray source, one of which provides 2‐D position and intensity information, and the other acts as a low‐noise point detector for diffraction experiments. The beam position monitor (BPM) was used as a reference detector for most of the experiments performed there, and the point detector was used for pump‐probe experiments involving phonons in bismuth and on photosensitive metal‐organic crystals. The schedule for development of these detectors was extremely tight, so as much as possible we used available designs for amplifiers etc.

Femtosecond lattice dynamics in photoexcited bismuth: Ultrafast optical and x-ray measurements

We investigate high amplitude coherent optical phonon dynamics in bismuth through femtosecond X-ray and optical scattering. From these experiments, we present the first detailed measurements of changes in the interatomic potential following high-density photoexcitation.

Ultrafast Optical and X-Ray Measurements of Femtosecond Lattice Dynamics in Photoexcited Bismuth

We present the first detailed measurements of the interatomic potential of photoexcited bismuth using ultrafast optical and x-ray scattering. Our results show that electronic softening is responsible for the strong chirp in phonon frequency.

Women in Physics in the U.S.: A Progress Report

1 Lawrence Livermore National Laboratory; 2 Duke University; 3 Louisiana State University; 4 Carleton College; 5 Heritage University; 6 University of Texas, Austin; 7 The CNA Corporation; 8 University of Alabama; 9 American Institute of Physics; 10 Barnard College, Columbia University; 11 University of Maryland; 12 Boston University; 13 Harvard University; 14 Argonne National Laboratory; 15 Johns Hopkins University; 16 Colorado College; 17 Shaw University; 18 Franklin W. Olin College of Engineering