Antihydrogen production and precision experiments

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The study of CPT invariance with the highest achievable precision in all particle sectors is of fundamental importance for physics. Equally important is the question of the gravitational acceleration of antimatter. In recent years, impressive progress has been achieved in capturing antiprotons in specially designed Penning traps, in cooling them to energies of a few milli-electron volts, and in storing them for hours in a small volume of space. Positrons have been accumulated in large numbers in similar traps, and low energy positron or positronium beams have been generated. Finally, steady progress has been made in trapping and cooling neutral ... continued below

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14 p.

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Nieto, M.M.; Goldman, T. & Holzscheiter, M.H. December 31, 1996.

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Description

The study of CPT invariance with the highest achievable precision in all particle sectors is of fundamental importance for physics. Equally important is the question of the gravitational acceleration of antimatter. In recent years, impressive progress has been achieved in capturing antiprotons in specially designed Penning traps, in cooling them to energies of a few milli-electron volts, and in storing them for hours in a small volume of space. Positrons have been accumulated in large numbers in similar traps, and low energy positron or positronium beams have been generated. Finally, steady progress has been made in trapping and cooling neutral atoms. Thus the ingredients to form antihydrogen at rest are at hand. Once antihydrogen atoms have been captured at low energy, spectroscopic methods can be applied to interrogate their atomic structure with extremely high precision and compare it to its normal matter counterpart, the hydrogen atom. Especially the 1S-2S transition, with a lifetime of the excited state of 122 msec and thereby a natural linewidth of 5 parts in 10{sup 16}, offers in principle the possibility to directly compare matter and antimatter properties at a level of 1 part in 10{sup 16}.

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14 p.

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INIS; OSTI as DE97002374

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  • 3. Biellian conference on low energy antiproton physics, Rome (Italy), 19-25 May 1996

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  • Other: DE97002374
  • Report No.: LA-UR--96-4788
  • Report No.: CONF-9605253--1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 442156
  • Archival Resource Key: ark:/67531/metadc675179

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 31, 1996

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  • July 25, 2015, 2:21 a.m.

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  • May 20, 2016, 1:02 p.m.

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Nieto, M.M.; Goldman, T. & Holzscheiter, M.H. Antihydrogen production and precision experiments, article, December 31, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc675179/: accessed September 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.