Project to produce cold highly charged ions using positron and electron cooling techniques

Oshima, Nobuyuki; Niigaki, M.; Inoue, Miyako; Kojima, Takao; Mohri, A.; Kanai, Yasuyuki; Nakai, Yutaka; Komaki, K.; Yamazaki, Y.

doi:10.1088/1742-6596/2/1/016

Cited by 3 publications

(1 citation statement)

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“…While the higher charge state boosts the precision of the mass measurement by increasing the cyclotron frequency, the breeding process has the potential to significantly raise the energy spread of the HCI extracted from the EBIT. Based on the existing data [11,12], we expect spreads of tens of eV/q. This spread as well as contaminations from the charge breeding of residual gas in the EBIT disturbs the mass measurement in the MPET.…”

Section: Introductionmentioning

confidence: 99%

Cooling of short-lived, radioactive, highly charged ions with the TITAN cooler Penning trap

et al. 2011

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TITAN is an on-line facility dedicated to precision experiments with short-lived radioactive isotopes, in particular mass measurements. The achievable resolution on mass measurement, which depends on the excitation time, is limited by the half life of the radioactive ion. One way to bypass this is by increasing the charge state of the ion of interest. TITAN has the unique capability of chargebreeding radioactive ions using an electron-beam ion trap (EBIT) in combination with Penning trap mass spectrometry. However, the breeding process leads to an increase in energy spread, E, which in turn negatively influences the mass uncertainty. We report on the development of a cooler Penning trap which aims at reducing the energy spread of the highly charged ions prior to injection into the precision mass measurement trap. Electron and proton cooling will be tested as possible routes. Mass selective cooling techniques are also envisioned.

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Section: Introductionmentioning

confidence: 99%