1. These include a plasma oscillating device, a penning trap and the polywell. 2. Also, the Penning trap can be made larger whilst maintaining strong trapping. 3. The electron relative atomic mass can be measured directly in a Penning trap . 4. This prompted the POPS and Penning trap designs. 5. Recently, the performance of the Penning trap mass spectrometer ISOLTRAP has been considerably enhanced. 6. Penning traps work; they have been used to store antiprotons for up to two months.7. Laser cooling can be used to remove energy from some kinds of ions in Penning traps . 8. Using the Penning trap can have advantages over the radio frequency trap ( Paul trap ). 9. The ions are then transferred to the second Penning trap ( in which decays are studied ). 10. The trick was to create neutral atoms, a Penning trap is useless at containing neutral atoms.
