SLAC Experiment E144 Home Page

SLAC Experiment 144 Home Page

About the Experiment

An electron (blue) enters the laser beam from the left, and collides with a laser photon to produce a high-energy gamma ray (wiggly yellow line). The electron is deflected downwards. The gamma ray then collides with four or more laser photons to produce an electron-positron pair.

Artist's conception of pair creation in 
E-144.  From Science, p. 1202 (1997).
Cartoon of white-lab-coated fellow
transforming an amorphous glow into some sort of structure with the
aid of a magician's hat.

This cartoon by Gil Eisner appeared in the November 1997 issue of Photonics Spectra above a brief note about our experiment. Of course, we don't produce anything like the complicated molecular structure the smiling fellow above comes up with, and the process isn't nearly so calm and genteel. But it's still a cute cartoon!

About the Experiment...

This page was created by Eric Prebys. It was last modified on Jan. 17, 1998 by Glenn Horton-Smith and Kirk McDonald .