Radiative cooling of Al?4 and Al?5 in a cryogenic environment

M. Lange; M. W. Froese; S. Menk; D. Bing; F. Fellenberger; M. Grieser; F. Laux; D. A. Orlov; R. Repnow; T. Sieber; Y. Toker; R. Von Hahn; A. Wolf; K. Blaum

doi:10.1088/1367-2630/14/6/065007

Radiative cooling of Al?4 and Al?5 in a cryogenic environment

M. Lange, M. W. Froese, S. Menk, D. Bing, F. Fellenberger, M. Grieser, F. Laux, D. A. Orlov, R. Repnow, T. Sieber, Y. Toker, R. Von Hahn, A. Wolf, K. Blaum

Weizmann Institute of Science

Weizmann Institute of Science

Research output: Contribution to journal › Article › peer-review

Abstract

We have investigated the radiative cooling of initially hot Al ^- ₄ and Al ^- 5 cluster anions during storage in a cryogenic ion beam trap at an ambient temperature of <15 K. By applying a statistical rate model to the ions' measured delayed detachment rate following excitation with a laser, we have obtained their vibrational temperature as a function of cooling time. The temperature curves for Al ^- ₄ suggest that the vibrational cooling slows down considerably once the ion reaches approximately room temperature. This suggests the participation of transitions from recently found low-lying electronic states of the anion in the cooling process, prior to reaching approximately room temperature. The experimental results for Al ^- ₅ suggest slightly slower radiative cooling than for Al?4

Original language	English
Article number	065007
Journal	New Journal of Physics
Volume	14
DOIs	https://doi.org/10.1088/1367-2630/14/6/065007
State	Published - Jun 2012

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1088/1367-2630/14/6/065007

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@article{208904af80e64e8ba596621426eaa7cd,

title = "Radiative cooling of Al?4 and Al?5 in a cryogenic environment",

abstract = "We have investigated the radiative cooling of initially hot Al - 4 and Al - 5 cluster anions during storage in a cryogenic ion beam trap at an ambient temperature of <15 K. By applying a statistical rate model to the ions' measured delayed detachment rate following excitation with a laser, we have obtained their vibrational temperature as a function of cooling time. The temperature curves for Al - 4 suggest that the vibrational cooling slows down considerably once the ion reaches approximately room temperature. This suggests the participation of transitions from recently found low-lying electronic states of the anion in the cooling process, prior to reaching approximately room temperature. The experimental results for Al - 5 suggest slightly slower radiative cooling than for Al?4",

author = "M. Lange and Froese, \{M. W.\} and S. Menk and D. Bing and F. Fellenberger and M. Grieser and F. Laux and Orlov, \{D. A.\} and R. Repnow and T. Sieber and Y. Toker and \{Von Hahn\}, R. and A. Wolf and K. Blaum",

note = "Helmholtz Association [HA216/EMMI]; Max Planck Foundation at the MPIK; European Commission within the ITS-LEIF research initiative; German-Israeli Foundation [I-900-231.7/2005]The authors thank X Urbain for contributing to the experimental equipment and to D Schwalm, O Heber and M Rappaport for very stimulating discussions. FL and SM acknowledge support from the Alliance Program of the Helmholtz Association (HA216/EMMI). The authors would like to express special thanks to the Max Planck Foundation for generous support of the CTF/CSR project at the MPIK. The authors also acknowledge financial support of the CTF experiment by the European Commission within the ITS-LEIF research initiative and from the German-Israeli Foundation under contract no. I-900-231.7/2005.",

year = "2012",

month = jun,

doi = "10.1088/1367-2630/14/6/065007",

language = "الإنجليزيّة",

volume = "14",

journal = "New Journal of Physics",

issn = "1367-2630",

publisher = "Institute of Physics",

}

TY - JOUR

T1 - Radiative cooling of Al?4 and Al?5 in a cryogenic environment

AU - Lange, M.

AU - Froese, M. W.

AU - Menk, S.

AU - Bing, D.

AU - Fellenberger, F.

AU - Grieser, M.

AU - Laux, F.

AU - Orlov, D. A.

AU - Repnow, R.

AU - Sieber, T.

AU - Toker, Y.

AU - Von Hahn, R.

AU - Wolf, A.

AU - Blaum, K.

N1 - Helmholtz Association [HA216/EMMI]; Max Planck Foundation at the MPIK; European Commission within the ITS-LEIF research initiative; German-Israeli Foundation [I-900-231.7/2005]The authors thank X Urbain for contributing to the experimental equipment and to D Schwalm, O Heber and M Rappaport for very stimulating discussions. FL and SM acknowledge support from the Alliance Program of the Helmholtz Association (HA216/EMMI). The authors would like to express special thanks to the Max Planck Foundation for generous support of the CTF/CSR project at the MPIK. The authors also acknowledge financial support of the CTF experiment by the European Commission within the ITS-LEIF research initiative and from the German-Israeli Foundation under contract no. I-900-231.7/2005.

PY - 2012/6

Y1 - 2012/6

N2 - We have investigated the radiative cooling of initially hot Al - 4 and Al - 5 cluster anions during storage in a cryogenic ion beam trap at an ambient temperature of <15 K. By applying a statistical rate model to the ions' measured delayed detachment rate following excitation with a laser, we have obtained their vibrational temperature as a function of cooling time. The temperature curves for Al - 4 suggest that the vibrational cooling slows down considerably once the ion reaches approximately room temperature. This suggests the participation of transitions from recently found low-lying electronic states of the anion in the cooling process, prior to reaching approximately room temperature. The experimental results for Al - 5 suggest slightly slower radiative cooling than for Al?4

AB - We have investigated the radiative cooling of initially hot Al - 4 and Al - 5 cluster anions during storage in a cryogenic ion beam trap at an ambient temperature of <15 K. By applying a statistical rate model to the ions' measured delayed detachment rate following excitation with a laser, we have obtained their vibrational temperature as a function of cooling time. The temperature curves for Al - 4 suggest that the vibrational cooling slows down considerably once the ion reaches approximately room temperature. This suggests the participation of transitions from recently found low-lying electronic states of the anion in the cooling process, prior to reaching approximately room temperature. The experimental results for Al - 5 suggest slightly slower radiative cooling than for Al?4

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U2 - 10.1088/1367-2630/14/6/065007

DO - 10.1088/1367-2630/14/6/065007

M3 - مقالة

SN - 1367-2630

VL - 14

JO - New Journal of Physics

JF - New Journal of Physics

M1 - 065007

ER -

Radiative cooling of Al?4 and Al?5 in a cryogenic environment

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