☆ 4.5 Article Proceedings Paper

The laser ion source trap for highest isobaric selectivity in online exotic isotope production

REVIEW OF SCIENTIFIC INSTRUMENTS (2010)

Journal

REVIEW OF SCIENTIFIC INSTRUMENTS

Volume 81, Issue 2, Pages -

Publisher

AMER INST PHYSICS

DOI: 10.1063/1.3318259

Keywords

ion sources; particle traps; radioactive ion beams; radioactive sources

Categories

Instruments & Instrumentation Physics, Applied

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Abstract

The improvement in the performance of a conventional laser ion source in the laser ion source and trap (LIST) project is presented, which envisages installation of a repeller electrode and a linear Paul trap/ion guide structure. This approach promises highest isobaric purity and optimum temporal and spatial control of the radioactive ion beam produced at an online isotope separator facility. The functionality of the LIST was explored at the offline test separators of University of Mainz (UMz) and ISOLDE/CERN, using the UMz solid state laser system. Ionization efficiency and selectivity as well as time structure and transversal emittance of the produced ion beam was determined. Next step after complete characterization is the construction and installation of the radiation-hard final trap structure and its first online application.

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First β-decay spectroscopy of 135In and new β-decay branches of 134In

M. Piersa-Silkowska, A. Korgul, J. Benito, L. M. Fraile, E. Adamska, A. N. Andreyev, R. Alvarez-Rodriguez, A. E. Barzakh, G. Benzoni, T. Berry, M. J. G. Borge, M. Carmona, K. Chrysalidis, J. G. Correia, C. Costache, J. G. Cubiss, T. Day Goodacre, H. De Witte, D. Fedorov, V. N. Fedosseev, G. Fernandez-Martinez, A. Fijalkowska, H. Fynbo, D. Galaviz, P. Galve, M. Garcia-Diez, P. T. Greenlees, R. Grzywacz, L. J. Harkness-Brennan, C. Henrich, M. Huyse, P. Ibanez, A. Illana, Z. Janas, K. Johnston, J. Jolie, D. S. Judson, V Karanyonchev, M. Kicinska-Habior, J. Konki, L. Koszuk, J. Kurcewicz, I Lazarus, R. Lica, A. Lopez-Montes, H. Mach, M. Madurga, I Marroquin, B. Marsh, M. C. Martinez, C. Mazzocchi, K. Miernik, C. Mihai, N. Marginean, R. Marginean, A. Negret, E. Nacher, J. Ojala, B. Olaizola, R. D. Page, J. Pakarinen, S. Pascu, S. Paulauskas, A. Perea, V Pucknell, P. Rahkila, C. Raison, E. Rapisarda, K. Rezynkina, F. Rotaru, S. Rothe, K. P. Rykaczewski, J-M Regis, K. Schomacker, M. Silkowski, G. Simpson, C. Sotty, L. Stan, M. Stanoiu, M. Stryjczyk, D. Sanchez-Parcerisa, V Sanchez-Tembleque, O. Tengblad, A. Turturica, J. M. Udias, P. Van Duppen, V. Vedia, A. Villa, S. Vinals, R. Wadsworth, W. B. Walters, N. Warr, S. G. Wilkins

Summary: The beta decay of the neutron-rich In-134 and In-135 was experimentally investigated to provide new insights into the nuclear structure of the tin isotopes with magic proton number Z = 50 above the N = 82 shell. New beta decay branches and neutron-unbound states were discovered, with comparisons to theoretical calculations and shell model predictions showing unexpected findings. The experimental results revealed discrepancies with the theoretical models, indicating complexities in the decay mechanisms and structure of the tin isotopes.

PHYSICAL REVIEW C (2021)

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Article Physics, Nuclear

Charge radii, moments, and masses of mercury isotopes across the N=126 shell closure

T. Day Goodacre, A. Afanasjev, A. E. Barzakh, L. Nies, B. A. Marsh, S. Sels, U. C. Perera, P. Ring, F. Wienholtz, A. N. Andreyev, P. Van Duppen, N. A. Althubiti, B. Andel, D. Atanasov, R. S. Augusto, J. Billowes, K. Blaum, T. E. Cocolios, J. G. Cubiss, G. J. Farooq-Smith, D. Fedorov, V. N. Fedosseev, K. T. Flanagan, L. P. Gaffney, L. Ghys, A. Gottberg, M. Huyse, S. Kreim, P. Kunz, D. Lunney, K. M. Lynch, V Manea, Y. Martinez Palenzuela, T. M. Medonca, P. L. Molkanov, M. Mougeot, J. P. Ramos, M. Rosenbusch, R. E. Rossel, S. Rothe, L. Schweikhard, M. D. Seliverstov, P. Spagnoletti, C. Van Beveren, M. Veinhard, E. Verstraelen, A. Welker, K. Wendt, R. N. Wolf, A. Zadvornaya, K. Zuber

Summary: By combining laser spectroscopy in a Versatile Arc Discharge and Laser Ion Source (VADLIS) with Penning-trap mass spectrometry at the CERN-ISOLDE facility, this study investigated neutron-rich mercury isotopes near the N = 126 shell closure. The odd-even staggering of mean square charge radii and the kink at N = 126 were analyzed within the covariant density functional theory (CDFT) framework, revealing their dependence on the particle-hole channel. The results suggest that the observed features are predominantly influenced by the occupation of specific orbitals and their relative energies.

PHYSICAL REVIEW C (2021)

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Article Optics

Long-range propagation of ultrafast ionizing laser pulses in a resonant nonlinear medium

G. Demeter, J. T. Moody, M. A. Kedves, B. Raczkevi, M. Aladi, A-M Bachmann, F. Batsch, F. Braunmueller, G. P. Djotyan, V Fedosseev, F. Friebel, S. Gessner, E. Granados, E. Gueran, M. Huether, V Lee, M. Martyanov, P. Muggli, E. Oez, H. Panuganti, L. Verra, G. Zevi Della Porta

Summary: The study explores the propagation of ultrafast laser pulses in a rubidium vapor cell, observing absorption, confinement, and broadening behaviors at different energy levels. Experimental observations show qualitative agreement with computer simulations, confirming the validity of the propagation model. Results suggest that the model can effectively interpret phenomena related to self-focusing and channeling of laser pulses by saturable, resonant nonlinearity.

PHYSICAL REVIEW A (2021)

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Article Physics, Nuclear

Laser-assisted nuclear decay spectroscopy of 176,177,179Au

R. D. Harding, A. N. Andreyev, A. E. Barzakh, J. G. Cubiss, P. Van Duppen, M. Al Monthery, N. A. Althubiti, B. Andel, S. Antalic, T. E. Cocolios, T. Day Goodacre, K. Dockx, G. J. Farooq-Smith, D. Fedorov, V. N. Fedosseev, D. A. Fink, L. P. Gaffney, L. Ghys, J. D. Johnson, D. T. Joss, M. Huyse, N. Imai, K. M. Lynch, B. A. Marsh, Y. Martinez Palenzuela, P. L. Molkanov, G. G. O'Neill, R. D. Page, R. E. Rossel, S. Rothe, M. D. Seliverstov, S. Sels, C. Van Beveren, E. Verstraelen

Summary: A study of laser-ionized and mass-separated neutron-deficient isotopes Au-176, Au-177, and Au-179 at ISOLDE, CERN, provided new insights into the complex fine-structure alpha decays of these isotopes and the properties of their daughter nuclei Ir-172, Ir-173, and Ir-175, as well as beta-decay daughter products Pt-177 and Pt-179. The study also deduced nuclear magnetic moments for high- and low-spin alpha-decaying states of Au-176, proposing probable spins and configurations based on the results.

PHYSICAL REVIEW C (2021)

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Article Physics, Nuclear

Detailed spectroscopy of doubly magic 132Sn

J. Benito, L. M. Fraile, A. Korgul, M. Piersa, E. Adamska, A. N. Andreyev, R. Alvarez-Rodriguez, A. E. Barzakh, G. Benzoni, T. Berry, M. J. G. Borge, M. Carmona, K. Chrysalidis, C. Costache, J. G. Cubiss, T. Day Goodacre, H. De Witte, D. Fedorov, V. N. Fedosseev, G. Fernandez-Martinez, A. Fijalkowska, M. Fila, H. Fynbo, D. Galaviz, P. Galve, M. Garcia-Diez, P. T. Greenlees, R. Grzywacz, L. J. Harkness-Brennan, C. Henrich, M. Huyse, P. Ibanez, A. Illana, Z. Janas, J. Jolie, D. S. Judson, V Karayonchev, M. Kicinska-Habior, J. Konki, J. Kurcewicz, I Lazarus, R. Lica, A. Lopez-Montes, M. Lund, H. Mach, M. Madurga, I Marroquin, B. Marsh, M. C. Martinez, C. Mazzocchi, N. Marginean, R. Marginean, K. Miernik, C. Mihai, R. E. Mihai, E. Nacher, A. Negret, B. Olaizola, R. D. Page, S. Paulauskas, S. Pascu, A. Perea, V Pucknell, P. Rahkila, C. Raison, E. Rapisarda, J-M Regis, K. Rezynkina, F. Rotaru, S. Rothe, D. Sanchez-Parcerisa, V Sanchez-Tembleque, K. Schomacker, G. S. Simpson, Ch Sotty, L. Stan, M. Stanoiu, M. Stryjczyk, O. Tengblad, A. Turturica, J. M. Udias, P. Van Duppen, V. Vedia, A. Villa-Abaunza, S. Vinals, W. B. Walters, R. Wadsworth, N. Warr

PHYSICAL REVIEW C (2020)

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