Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Ultrafast Time-Resolved Soft X-Ray Photoelectron Spectroscopy of Dissociating Br2



L Nugent-Glandorf, M Scheer, D A. Samuels, A M. Mulhisen, E R. Grant, X Yang, V M. Bierbaum, S R. Leone


The dissociation of excited state Br2 is probed with the novel technique of ultrafast soft x-ray photoelectron spectroscopy. Excited Br2 molecules are prepared in the dissociative 1IIu state with 80 fs 400 nm pulses, and a series of photoelectron spectra are obtained during dissociation with pulses of soft x-ray light (47 nm, 26.4 eV, 250 fs). The formation of Br atoms is readily detected and the data support a dissociation time for Br2 on the order of 40 fs. Amplitudes of the pump-probe features reveal that the ionization cross-section of atomic Br at 47 nm is nearly equal to} 40 times larger than that of Br2.
Physical Review Letters
No. 19


bromine, photoelectron spectroscopy, ultrafast


Nugent-Glandorf, L. , Scheer, M. , Samuels, D. , Mulhisen, A. , Grant, E. , Yang, X. , Bierbaum, V. and Leone, S. (2001), Ultrafast Time-Resolved Soft X-Ray Photoelectron Spectroscopy of Dissociating Br<sub>2</sub>, Physical Review Letters (Accessed March 1, 2024)
Created October 31, 2001, Updated October 12, 2021