X-ray-induced fluorescence spectroscopy with highly charged ion beam produced by a laser ion source

2004 ◽  
Vol 75 (5) ◽  
pp. 1579-1581 ◽  
Author(s):  
S. Ozawa ◽  
M. Wakasugi ◽  
M. Okamura ◽  
T. Katayama ◽  
T. Koizumi ◽  
...  
2016 ◽  
Vol 87 (2) ◽  
pp. 02A917 ◽  
Author(s):  
H. Y. Zhao ◽  
J. J. Zhang ◽  
Q. Y. Jin ◽  
W. Liu ◽  
G. C. Wang ◽  
...  

1996 ◽  
Vol 14 (3) ◽  
pp. 323-333 ◽  
Author(s):  
S.A. Kondrashev ◽  
J. Collier† ◽  
T. R. Sherwood†

The problem of matching an ion beam delivered by a high-intensity ion source with an accelerator is considered. The experimental results of highly charged ion beam transport with space-charge compensation by electrons are presented. A tungsten thermionic cathode is used as a source of electrons for beam compensation. An increase of ion beam current density by a factor of 25 is obtained as a result of space-charge compensation at a distance of 3 m from the extraction system. The process of ion beam space-charge compensation, requirements for a source of electrons, and the influence of recombination losses in a spacecharge-compensated ion beam are discussed.


2014 ◽  
Vol 27 ◽  
pp. 1460145 ◽  
Author(s):  
ALBERTO ANDRIGHETTO ◽  
MATTIA MANZOLARO ◽  
STEFANO CORRADETTI ◽  
DANIELE SCARPA ◽  
JESU VASQUEZ ◽  
...  

The SPES project at Laboratori di Legnaro of INFN (Italy) is concentrating on the production of neutron-rich radioactive nuclei for nuclear physics experiments using uranium fission at a rate of 1013 fission/s. The emphasis on neutron-rich isotopes is justified by the fact that this vast territory has been little explored. The Radioactive Ion Beam (RIB) will be produced by the ISOL technique using proton induced fission on a direct target of UCx. The most critical element of the SPES project is the Multi-Foil Direct Target. Up to the present time, the proposed target represents an innovation in terms of its capability to sustain the primary beam power. This talk will present the status of the project financed by INFN, which is actually in the construction phase at Legnaro. In particular, developments related to the target and the ion-source activities using the surface ion source, plasma ion source, and laser ion source techniques will be reported.


2012 ◽  
Vol 83 (2) ◽  
pp. 02A904 ◽  
Author(s):  
Y. Liu ◽  
T. Gottwald ◽  
C. C. Havener ◽  
J. Y. Howe ◽  
J. Kiggans ◽  
...  

2002 ◽  
Vol 20 (3) ◽  
pp. 455-458 ◽  
Author(s):  
N.D. MESCHERYAKOV ◽  
N.N. ALEXEEV ◽  
A.N. BALABAEV ◽  
S.A. KONDRASHEV ◽  
K.V. KONYUKOV ◽  
...  

In this article, we present the results of the laser ion source (LIS) for heavy ion high charge state Institute of Theoretical and Experimental Physics terawatt accumulator facility. This LIS is a duty ion source of C+4 for the injector. The main parameters of CO2 laser, vacuum target chamber, ion beam high voltage extraction system, and low energy beam transport line are shown. The stability of the LIS operation is discussed and measured ion beam parameters (ion current, pulse duration, emittance) for different charge states are presented. After the upgrading of the laser cavity, high voltage capacitors, and spark gaps and the installation of a new catalyst regenerator system, the CO2 laser became much more stable and allows long term operation. LIS works about 1 × 106 shots without intervention.


2007 ◽  
Vol 58 ◽  
pp. 423-426 ◽  
Author(s):  
B Popeskov ◽  
M Milivojevi ◽  
J Cveti ◽  
T Nedeljkovi ◽  
I Dragani

2018 ◽  
Vol 167 ◽  
pp. 02007
Author(s):  
Vincenzo Nassisi ◽  
Domenico Delle Side ◽  
Vito Turco ◽  
Luigi Martina

In this work, we study surface modifications of AISI 420 stainless steel specimens in order to improve their surface properties. Oxidation resistance and surface micro-hardness were analyzed. Using an ion beam delivered by a Laser Ion Source (LIS) coupled to an electrostatic accelerator, we performed implantation of low energy yttrium ions on the samples. The ions experienced an acceleration passing through a gap whose ends had a potential difference of 60 kV. The gap was placed immediately before the samples surface. The LIS produced high ions fluxes per laser pulse, up to 3x1011 ions/cm2, resulting in a total implanted flux of 7x1015 ions/cm2. The samples were characterized before and after ion implantation using two analytical techniques. They were also thermally treated to investigate the oxide scale. The crystal phases were identified by an X-ray diffractometer, while the micro-hardness was assayed using the scratch test and a profilometer. The first analysis was applied to blank, implanted and thermally treated sample surface, while the latter was applied only to blank and implanted sample surfaces. We found a slight increase in the hardness values and an increase to oxygen resistance. The implantation technique we used has the advantages, with respect to conventional methods, to modify the samples at low temperature avoiding stray diffusion of ions inside the substrate bulk.


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