Principal Investigator |
Prof. David E. Pritchard
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Recently Graduated Students |
Simon Rainville |
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Single-Ion Mass Spectrometry
By trapping single atoms or molecules, we make the most accurate mass measurements in the world ! Since 1983, our group has developed a variety of novel techniques for atomic mass measurements and has used these to measure 12 atomic masses in addition to the neutron . The accuracy of these measurements is typically 0.1 ppb (1 part in 10,000,000,000), making them 20 to 1000 times more accurate than previously measured values. |
** Recent News **By simultaneously putting two different ions in the trap and controlling their relative motion, we have been able to improve the precision of our measurements by about a factor of 10 (to below 0.01 ppb) ! To read more about the two-ion technique, check our paper published in Science on Jan 16, 2004 (Science 303, p. 334, see our publications page). The MIT News services also wrote a story about our recent success. |
For general inquiries please contact:
Carol A. Costa
Administrative Assistant
Massachusetts Institute of Technology
Room 26-237
77 Massachusetts Avenue
Cambridge, MA 02139-4307
617.253.6830—Tel
617.253.4876—Fax
cacosta@mit.edu
Affilitations:
Research Laboratory
of Electronics (RLE)
Physics
department
Last modified: 3/1/2004