Abstract
Many cold positrons in ultrahigh vacuum are required to produce cold antihydrogen, to cool highly stripped ions, and to study ultracold plasmas. Up to 3.5 x 104 such positrons have now been accumulated into the ultra-high vacuum of a 4.2 K Penning trap, at a rate exceeding 103/hr. Both the accumulation rate (per high energy positron incident at the trap), and the number accumulated, are much larger than ever before realized at low tem-peratures in high vacuum. Cooling of high energy positrons (from22Na decay) in a tungsten crystal near the trap, together with purely electronic trapping and damping, are key to the efficient accumulation and to pro-jected improvements.
Original language | English (US) |
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Pages (from-to) | 337-340 |
Number of pages | 4 |
Journal | Physica Scripta |
Volume | 1995 |
Issue number | T59 |
DOIs | |
State | Published - Jan 1 1995 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Mathematical Physics
- Condensed Matter Physics
- Physics and Astronomy(all)