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Your search keyword '"Rossignoli, M."' showing total 4 results
Start Over Author "Rossignoli, M." Topic ionization (atomic physics)
4 results on '"Rossignoli, M."'

1. New Calibrated Evaporation Oven for Time of Flight Mass Spectrometer in Offline SPES Laser Laboratory.

Author

Rossignoli, M., Scarpa, D., Andrighetto, A., Campostrini, M., Iannelli, M., Mariotti, E., Nicolosi, P., and Tomaselli, A.

Subjects
*RADIOACTIVE nuclear beams, *TIME-of-flight mass spectrometry, *IONIZATION (Atomic physics), *GRAPHITE, *HEATING, *FURNACES
Abstract

In the framework of the research and development activities of the Selective Production of Exotic Species (SPES) project [1] regarding the optimization of the radioactive beam production a new home made Time of Flight Mass Spectrometer (ToF-MS) was build in the off-line laser laboratory. Thanks to this instrument it is possible to test resonant laser ionization processes of stable species, to evaluate their ionization efficiency and even isotope separation capability. Nowadays, a Nd:YAG laser is used to evaporate atoms by laser ablation in the spectrometer, making these atoms available for later resonant ionization processes. The new evaporation oven, replacing the ablation system, is designed to guarantee a more stable and calibrated atom flux making possible laser ionization efficiency measurements, which are inapplicable with the current system. This work will present the design of the new graphite oven system, its preliminary heating tests, and first measurements aimed to evaluate the evaporation profile generated by the heated furnace. [ABSTRACT FROM AUTHOR]

Published
2018
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2. The SPES radioactive ion beam project of LNL: status and perspectives.

Author

de Angelis, Giacomo, Prete, G., Andrigetto, A., Manzolaro, M., Corradetti, S., Scarpa, D., Rossignoli, M., Monetti, A., Lollo, M., Calderolla, M., Vasquez, J., Zafiropoulos, D., Sarchiapone, L., Benini, D., Favaron, P., Rigato, M., Pegoraro, R., Maniero, D., Calabretta, L., and Comunian, M.

Subjects
ION beams, CYCLOTRONS, PROTON beams, NUCLEAR physics, IONIZATION (Atomic physics), FACILITY design & construction
Abstract

A new Radioactive Ion Beam (RIB) facility (SPES) is presently under construction at the Legnaro National Laboratories of INFN. The SPES facility is based on the ISOL method using an UCx Direct Target able to sustain a power of 8 kW. The primary proton beam is provided by a high current Cyclotron accelerator with energy of 35-70 MeV and a beam current of 0.2-0.7 mA. Neutron-rich radioactive ions are produced by proton induced fission on an Uranium target at an expected fission rate of the order of 1013 fissions per second. After ionization and selection the exotic isotopes are re-accelerated by the ALPI superconducting LINAC at energies of 10A MeV for masses in the region A=130 amu. The expected secondary beam rates are of the order of 107 - 109 pps. Aim of the SPES facility is to deliver high intensity radioactive ion beams of neutron rich nuclei for nuclear physics research as well as to be an interdisciplinary research centre for radio-isotopes production for medicine and for neutron beams. [ABSTRACT FROM AUTHOR]

Published
2016
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3. Ongoing characterization of the forced electron beam induced arc discharge ion source for the selective production of exotic species facility.

Author

Manzolaro, M., Andrighetto, A., Meneghetti, G., Monetti, A., Scarpa, D., Rossignoli, M., Vasquez, J., Corradetti, S., Calderolla, M., and Prete, G.

Subjects
ION sources, IONIZATION (Atomic physics), NUCLEAR physics instruments, ELECTRON beams, LABORATORIES, ISOTOPE separation, PARTICLES (Nuclear physics)
Abstract

An intense research and development activity to finalize the design of the target ion source system for the selective production of exotic species (SPES) facility (operating according to the isotope separation on line technique) is at present ongoing at Legnaro National Laboratories. In particular, the characterization of ion sources in terms of ionization efficiency and transversal emittance is currently in progress, and a preliminary set of data is already available. In this work, the off-line ionization efficiency and emittance measurements for the SPES forced electron beam induced arc discharge ion source in the case of a stable Ar beam are presented in detail. [ABSTRACT FROM AUTHOR]

Published
2014
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4. Photo-ionization of aluminum in a hot cavity for the selective production of exotic species project.

Author

Scarpa, D., Makhathini, L., Tomaselli, A., Grassi, D., Corradetti, S., Manzolaro, M., Vasquez, J., Calderolla, M., Rossignoli, M., Monetti, A., Andrighetto, A., and Prete, G.

Subjects
SILICON carbide, ION beams, PARTICLE beams, ALUMINUM, IONIZATION (Atomic physics), LASERS
Abstract

SPES (Selective Production of Exotic Species) is an Isotope Separation On-Line (ISOL) based accelerator facility that will be built in the Legnaro-Istituto Nazionale di Fisica Nucleare (INFN) Laboratory (Italy), intended to provide intense neutron-rich radioactive ion beams obtained by proton-induced fission of a uranium carbide (UCx) target. Besides this main target material, silicon carbide (SiC) will be the first to be used to deliver p-rich beams. This target will also validate the functionality of the SPES facility with aluminum beam as result of impinging SiC target with proton beam. In the past, off line studies on laser photoionization of aluminum have been performed in Pavia Spectroscopy Laboratory and in Laboratori Nazionali di Legnaro; a XeCl excimer laser was installed in order to test the laser ionization in the SPES hot cavity. With the new Wien filter installed a better characterization of the ionization process in terms of efficiency was performed and results are discussed. [ABSTRACT FROM AUTHOR]

Published
2014
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