A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Separation of atomic and molecular ions by ion mobility with an RF carpet (2021)

Miskun, Ivan, Dickel, Timo, San Andrés, Samuel Ayet, Bergmann, Julian, Constantin, Paul, Ebert Jens, Geissel, Hans, Greiner, Florian, Haettner, Emma, Hornung, Christine, Lippert, Wayne, Mardor, Israel, Moore, Iain, Plaß, Wolfgang R., Purushothaman, Sivaji, Rink, Ann-Kathrin, Reiter, Moritz P., Scheidenberger, Christoph, Weick, Helmut. (2021). Separation of atomic and molecular ions by ion mobility with an RF carpet. International Journal of Mass Spectrometry, 459, Article 116450. https://doi.org/10.1016/j.ijms.2020.116450

JYU-tekijät tai -toimittajat

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Miskun, Ivan; Dickel, Timo; San Andrés, Samuel Ayet; Bergmann, Julian; Constantin, Paul; Ebert Jens; Geissel, Hans; Greiner, Florian; Haettner, Emma; Hornung, Christine; et al.

Lehti tai sarja: International Journal of Mass Spectrometry

ISSN: 1387-3806

eISSN: 1873-2798

Julkaisuvuosi: 2021

Volyymi: 459

Artikkelinumero: 116450

Kustantaja: Elsevier BV

Julkaisumaa: Alankomaat

Julkaisun kieli: englanti

DOI: https://doi.org/10.1016/j.ijms.2020.116450

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/72798

Rinnakkaistallenteen verkko-osoite (pre-print): https://arxiv.org/abs/2007.14467


Gas-filled stopping cells are used at accelerator laboratories for the thermalization of high-energy radioactive ion beams. Common challenges of many stopping cells are a high molecular background of extracted ions and limitations of extraction efficiency due to space-charge effects. At the FRS Ion Catcher at GSI, a new technique for removal of ionized molecules prior to their extraction out of the stopping cell has been developed. This technique utilizes the RF carpet for the separation of atomic ions from molecular contaminant ions through their difference in ion mobility. Results from the successful implementation and test during an experiment with a 600 MeV/u 124 Xe primary beam are presented. Suppression of molecular contaminants by three orders of magnitude has been demonstrated. Essentially background-free measurement conditions with less than 1% of background events within a mass-to-charge range of 25 u/e have been achieved. The technique can also be used to reduce the space-charge effects at the extraction nozzle and in the downstream beamline, thus ensuring high efficiency of ion transport and highly-accurate measurements under space-charge-free conditions.

YSO-asiasanat: ionit; epäpuhtaudet; erottaminen (tekniikka); puhdistus; fysiikka; menetelmät

Vapaat asiasanat: ion mobility; gas cell; beam purification; molecular contamination; low-energy RIB; space charge

Liittyvät organisaatiot


OKM-raportointi: Kyllä

Raportointivuosi: 2021

JUFO-taso: 1

Viimeisin päivitys 2022-20-09 klo 14:12