A cold electron-impact ion source driven by a photo-cathode - New opportunities for the delivery of radioactive molecular beams?

被引：3

作者：

Ballof, Jochen ^{[1
,2
]}

Au, Mia ^{[1
,2
]}

Barbero, Ermanno ^{[1
]}

Chrysalidis, Katerina ^{[1
]}

Duellmann, Christoph E. ^{[2
,3
,4
]}

Fedosseev, Valentin ^{[1
]}

Granados, Eduardo ^{[1
]}

Heinke, Reinhard ^{[1
]}

Marsh, Bruce A. ^{[1
]}

Owen, Michael ^{[1
]}

Rothe, Sebastian ^{[1
]}

Stora, Thierry ^{[1
]}

Yakushev, Alexander ^{[3
,4
]}

机构：

[1] CERN, Accelerator Syst Dept, CH-1211 Geneva 23, Switzerland

[2] Johannes Gutenberg Univ Mainz, Dept Chem, Standort TRIGA, Fritz Strassmann Weg 2, D-55128 Mainz, Germany

[3] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany

[4] Helmholtz Inst Mainz, D-55099 Mainz, Germany

来源：

19TH INTERNATIONAL CONFERENCE ON ION SOURCES - ICIS2021 | 2022年 / 2244卷

关键词：

SIDE-BAND; LASER; TARGET;

D O I：

10.1088/1742-6596/2244/1/012072

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The thick-target ISOL (Isotope mass Separation OnLine) method provides beams of more than 1000 radionuclides of 74 elements. The method is well established for elements with sufficiently high volatility at ca. 2000 degrees C. To extract non-volatile elements the formation of a volatile molecule is required. While successful in some cases (e.g. carbon or boron), most of these elements are not yet available as ISOL beam. A variety of volatile carrier molecules has been proposed for all elements produced in the target material, but their probability of survival during the extraction and ionization process is often limited by the high temperatures required for isotope diffusion in the thick targets and for ion source operation. While cold target concepts have already been proposed, the normal mode of operation of the typically used Versatile Arc Discharge Ion Source (VADIS) with a hot cathode is not well suited. Here, we report about first measurements with an electron-impact ion source operated at ambient temperature using electrons that were liberated via the photo-electric effect from a copper cathode.

引用

页数：8

共 39 条

[21] The effect of space charge and residual gases on thermionic currents in high vacuum
Langmuir, I
[J]. PHYSICAL REVIEW, 1913, 2 (06): : 450 - 486
[22] Thermionic effects caused by vapours of alkali metals
Langmuir, I
Kingdon, KH
[J]. PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-CONTAINING PAPERS OF A MATHEMATICAL AND PHYSICAL CHARACTER, 1925, 107 (741) : 61 - 79
[23] Marsh B, 2013, CERN2013007
[24] Martinez Palenzuela Y., 2019, THESIS KU LEUVEN
[25] Palmer D, 2005, SLACTN05080
[26] Development of high efficiency Versatile Arc Discharge Ion Source at CERN ISOLDE
Penescu, L.
Catherall, R.
Lettry, J.
Stora, T.
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2010, 81 (02)
[27] Penescu L C, 2009, THESIS U POLITEHNICA
[28] Pimpec F., 2013, APPL PHYS A-MATER, V112, P647
[29] Target nanomaterials at CERN-ISOLDE: synthesis and release data
Ramos, J. P.
Gottberg, A.
Augusto, R. S.
Mendonca, T. M.
Riisager, K.
Seiffert, C.
Bowen, P.
Senos, A. M. R.
Stora, T.
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2016, 376 : 81 - 85
[30] Spectroscopy of short-lived radioactive molecules
Ruiz, R. F. Garcia
Berger, R.
Billowes, J.
Binnersley, C. L.
Bissell, M. L.
Breier, A. A.
Brinson, A. J.
Chrysalidis, K.
Cocolios, T. E.
Cooper, B. S.
Flanagan, K. T.
Giesen, T. F.
de Groote, R. P.
Franchoo, S.
Gustafsson, F. P.
Isaev, T. A.
Koszorus, A.
Neyens, G.
Perrett, H. A.
Ricketts, C. M.
Rothe, S.
Schweikhard, L.
Vernon, A. R.
Wendt, K. D. A.
Wienholtz, F.
Wilkins, S. G.
Yang, X. F.
[J]. NATURE, 2020, 581 (7809) : 396 - +

← 1 2 3 4 →