Development of a surface ionization source for the production of radioactive alkali ion beams in SPIRAL

Eléon, C.; Jardin, P.; Gaubert, G.; Saint-Laurent, M.G.; Alcántara-Núñez, J A; Conde, Ramiro; Barué, C.; Boilley, David; Cornell, J.C.; Delahaye, P.; Dubois, M.; Jacquot, B.; Lehérissier, P.; Leroy, R.; Lhersonneau, G.; Marie-Jeanne, M.; Maunoury, L.; Pacquet, J. Y.; Pellemoine, Frédérique; Pierret, C.; Thomas, J. C.; Villari, A.C.C.

doi:10.1016/j.nimb.2008.05.067

Cited by 15 publications

(9 citation statements)

References 18 publications

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“…The nuclei 47 K, 25,26,27,28 Na, 28,29,30,31 Al and 8,9 Li have been produced using 48 Ca projectile fragmentation 8 and 1+ ionized by surface ionization in a carbon pipe. The total extraction efficiencies depend of the isotopes.…”

Section: Tests With Radioactive 1+ Ionsmentioning

confidence: 99%

“…The neutron-rich nuclei 6 He and 8 Li were chosen to be investigated with highest priority for SPIRAL-2 and SARAF. We discuss also our attempts to find a production scheme for 15 C and nitrogen isotopes.…”

Section: Neutron-rich Beams At Spiral-1 and Spiral-2mentioning

confidence: 99%

“…This rate, while much lower than the yield calculated for SARAF, is still 50 times the one at SPIRAL-1 (8x10 9 pps at 2.5 kW). Let us then further remark the extracted rate at SPIRAL1 of 2x10 8 pps without acceleration and 3x10 7 pps to 5x10 6 pps after acceleration depending on final 6 He energy. Figure 5a shows the phase diagram of BeO calculated at GANIL with F*A*C*T code 25 when the target is alone or when it is in contact with C, Ta, Mo, W or Re.…”

Section: He Productionmentioning

confidence: 99%

“…As for 6 He, extensive simulations 15,22 have been performed by the SOREQ group concerning 8 Li production by 10 B(n,α) 8 Li. In-target rate of 8.10 12 pps is expected at SARAF assuming 2 mA deuterons, Li converter, and natural B target density.…”

Section: Productionmentioning

confidence: 99%

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Comparison Of Expected Yields For Light Radioactive Beams At SPIRAL-1 And 2

Saint-Laurent¹,

Pichard²,

Lhersonneau³

et al. 2010

AIP Conference Proceedings

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Abstract. Light-particles stable high-intensity beams (p, d, 3,4 He…) will be available from the Linac driver accelerator of SPIRAL-2. Yields of neutron-deficient isotopes as well as of neutron-rich isotopes (by means of reactions with secondary neutrons) are compared with those presently available at the SPIRAL-1 facility. We explore, for light beams (Z< 16) asked in the 'white book' of SPIRAL-2 1 , the production methods taking into account the in-target yield but also the feasibility of making such beams by the ISOL method (considering reaction, target, thermal and release properties). We discuss some of the tests needed and planned. A comparison with the present and potentially attainable yields at SPIRAL-1 is presented.

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Section: Tests With Radioactive 1+ Ionsmentioning

confidence: 99%

Section: Neutron-rich Beams At Spiral-1 and Spiral-2mentioning

confidence: 99%

Section: He Productionmentioning

confidence: 99%

Section: Productionmentioning

confidence: 99%

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Comparison Of Expected Yields For Light Radioactive Beams At SPIRAL-1 And 2

Saint-Laurent¹,

Pichard²,

Lhersonneau³

et al. 2010

AIP Conference Proceedings

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“…Their crucial part is a semi-opened ioniser heated to a high working temperature (≈ 2000 K) either by electron bombardment or ohmically [6,7]. It has usually the form of a tube but the spherical ones were also used [8,9].…”

Section: Introductionmentioning

confidence: 99%

Ionisation Efficiency in Conical Hot Cavities

Turek

2017

Acta Phys. Pol. A

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Surface ionisation in a new type of hot cavity characterised by the shape of a truncated cone is considered in the paper. Influence of the hot cavity shape and its temperature on the ionisation efficiency of stable and long-lived nuclides is under investigation and the supremacy of elongated conical cavities is proven. The role of the extraction opening size is studied and its optimal diameter (≈ 1 mm) is found for the considered cavity shapes. It is shown that the extraction voltages of 1-2 kV are large enough to obtain high efficiencies and saturation of the current-voltage curves is observed above these values. Changes of ionisation effciency with the ioniser temperature are investigated -increase of ion yield with T is observed. It was proven that cold spots inside the ioniser cavity (near the extraction opening -in the considered case) can degrade ion source performance by several tens percent.

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