General Colloquium:

February 7 - 4:00pm Phys 223
(Coffee at 3:30p.m. in room 242)

Marc William Caffee

Physics Department, Purdue University

Title:

Rocks from space: probes for stellar processes and history.

Abstracts:

The surfaces of meteoroids and the moon are exposed to energetic particles that produce through spallation reactions a variety of stable- and radio-nuclides. The Sun modulates the flux of energetic particles originating from outside our solar system and contributes lower energy particles whose effects can also be seen in extraterrestrial materials. The presence of cosmic-ray-produced nuclides in "space rocks" provides clues about the nature and history of stellar processes.

Website

http://www.physics.purdue.edu/faculty/mcaffee