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Guillous S, Bourin C, Ban D'Etat B, Benyagoub A, Cassimi A, Feierstein C, Gardés E, Giglio E, Girard S, Grygiel C, Houel A, Lebius H, Méry A, Monnet I, Ramillon JM, Rangama J, Ropars F, Verzeroli E, Viteau M, Delobbe A. A new setup for localized implantation and live-characterization of keV energy multiply charged ions at the nanoscale. Rev Sci Instrum 2016; 87:113901. [PMID: 27910696 DOI: 10.1063/1.4966675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An innovative experimental setup, PELIICAEN, allowing the modification of materials and the study of the effects induced by multiply charged ion beams at the nanoscale is presented. This ultra-high vacuum (below 5 × 10-10 mbar) apparatus is equipped with a focused ion beam column using multiply charged ions and a scanning electron microscope developed by Orsay Physics, as well as a scanning probe microscope. The dual beam approach coupled to the scanning probe microscope achieves nanometer scale in situ topological analysis of the surface modifications induced by the ion beams. Preliminary results using the different on-line characterization techniques to study the formation of nano-hillocks on silicon and mica substrates are presented to illustrate the performances of the setup.
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Affiliation(s)
- S Guillous
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - C Bourin
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - B Ban D'Etat
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - A Benyagoub
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - A Cassimi
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - C Feierstein
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - E Gardés
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - E Giglio
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - S Girard
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - C Grygiel
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - A Houel
- Orsay Physics (Tescan-Orsay Holding), 95 Avenue des Monts Auréliens, ZA Saint-Charles F-13710, Fuveau, France
| | - H Lebius
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - A Méry
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - I Monnet
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - J-M Ramillon
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - J Rangama
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - F Ropars
- CIMAP (CEA, CNRS, ENSICAEN, UNICAEN, Normandie University), Boulevard Henri Becquerel, BP 5133, Caen 14070 Cedex 5, France
| | - E Verzeroli
- Orsay Physics (Tescan-Orsay Holding), 95 Avenue des Monts Auréliens, ZA Saint-Charles F-13710, Fuveau, France
| | - M Viteau
- Orsay Physics (Tescan-Orsay Holding), 95 Avenue des Monts Auréliens, ZA Saint-Charles F-13710, Fuveau, France
| | - A Delobbe
- Orsay Physics (Tescan-Orsay Holding), 95 Avenue des Monts Auréliens, ZA Saint-Charles F-13710, Fuveau, France
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Jardin P, Bajeat O, Couratin C, Delahaye P, Dubois M, Feierstein C, Pellemoine F, Lecomte P, Lehérissier P, Maunoury L, Saint-Laurent MG, Traykov E. Status of the SPIRAL I upgrade at GANIL. Rev Sci Instrum 2012; 83:02A911. [PMID: 22380252 DOI: 10.1063/1.3672435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The upgrade of the "Système de Production d'Ions Radioactifs en Ligne" phase I (SPIRAL I) installed at the "Grand Accélérateur National d'Ions Lourds" (GANIL) situated at Caen, France, is in progress and should be ready by 2014. In parallel, the first part of SPIRAL II facility is currently under construction. The global status of the upgrade is presented: goal, radioactive ion production systems, modification of the production cave and impact of the current safety re-evaluation of GANIL.
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Affiliation(s)
- P Jardin
- GANIL, Grand Accélérateur National d'Ions Lourds, CEA-DSM∕CNRS-IN2P3, Blvd. H. Becquerel, BP 55027 14076 Caen Cedex 5, France.
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Lecesne N, Eleon C, Feierstein C, Gaubert G, Huguet Y, Jardin P, Lemagnen F, Leroy R, Pacquet JY, Pellemoine F, Pichard A, Bajeat O, Essabaa S, Lau C, Launay F, Serani L, Demonchy CE. The radioactive ion beam production systems for the SPIRAL2 project. Rev Sci Instrum 2008; 79:02A907. [PMID: 18315162 DOI: 10.1063/1.2823895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The SPIRAL2 project, currently under construction at GANIL, will include an isotope separator on line based facility for the production and acceleration of radioactive ion beams. A superconducting linear accelerator will accelerate 5 mA deuterons up to 40 MeV and 1 mA heavy ions up to 14.5 MeV/u. These primary beams will be used to bombard both thick and thin targets. We are investigating three different techniques to produce the radioactive ion beams: (1) the neutron induced fission of uranium carbide, (2) the direct interaction of deuterons in a uranium carbide target, and (3) the interaction of a heavy ion beam with a target. All these production systems will be coupled to an ion source. Four kinds of ion sources are foreseen for the ionization of the radioactive atoms: an electron cyclotron resonance ion source, a surface ionization ion source, a forced electron beam induced arc discharge ion source, and a laser ion source depending on the characteristics of the desired radioactive ion beam in terms of intensity, efficiency, purity, etc. A presentation of the SPIRAL2 project and of the different production systems is given.
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Affiliation(s)
- N Lecesne
- GANIL, BP55027-14076, Caen Cedex 5, France.
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González Iglesias A, Suárez C, Feierstein C, Díaz-Torga G, Becu-Villalobos D. Desensitization of angiotensin II: effect on [Ca2+]i, inositol triphosphate, and prolactin in pituitary cells. Am J Physiol Endocrinol Metab 2001; 280:E462-70. [PMID: 11171601 DOI: 10.1152/ajpendo.2001.280.3.e462] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Activation of pituitary angiotensin (ANG II) type 1 receptors (AT1) mobilizes intracellular Ca2+, resulting in increased prolactin secretion. We first assessed desensitization of AT1 receptors by testing ANG II-induced intracellular Ca2+ concentration ([Ca2+](i)) response in rat anterior pituitary cells. A period as short as 1 min with 10(-7) M ANG II was effective in producing desensitization (remaining response was 66.8 +/- 2.1% of nondesensitized cells). Desensitization was a concentration-related event (EC(50): 1.1 nM). Although partial recovery was obtained 15 min after removal of ANG II, full response could not be achieved even after 4 h (77.6 +/- 2.4%). Experiments with 5 x 10(-7) M ionomycin indicated that intracellular Ca2+ stores of desensitized cells had already recovered when desensitization was still significant. The thyrotropin-releasing hormone (TRH)-induced intracellular Ca2+ peak was attenuated in the ANG II-pretreated group. ANG II pretreatment also desensitized ANG II- and TRH-induced inositol phosphate generation (72.8 +/- 3.5 and 69.6 +/- 6.1%, respectively, for inositol triphosphate) and prolactin secretion (53.4 +/- 2.3 and 65.1 +/- 7.2%), effects independent of PKC activation. We conclude that, in pituitary cells, inositol triphosphate formation, [Ca2+](i) mobilization, and prolactin release in response to ANG II undergo rapid, long-lasting, homologous and heterologous desensitization.
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MESH Headings
- Angiotensin II/pharmacology
- Animals
- Calcium/metabolism
- Cells, Cultured
- Drug Tolerance
- Female
- Inositol 1,4,5-Trisphosphate/metabolism
- Ionomycin/pharmacology
- Pituitary Gland, Anterior/drug effects
- Pituitary Gland, Anterior/metabolism
- Prolactin/metabolism
- Protein Kinase C/metabolism
- Rats
- Rats, Sprague-Dawley
- Receptor, Angiotensin, Type 1
- Receptor, Angiotensin, Type 2
- Receptors, Angiotensin/drug effects
- Receptors, Angiotensin/physiology
- Tetradecanoylphorbol Acetate/pharmacology
- Thyrotropin-Releasing Hormone/pharmacology
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Affiliation(s)
- A González Iglesias
- Instituto de Biología y Medicina Experimental-Consejo Nacional de Investigaciones Cientificas y Técnicas, 1428 Buenos Aires, Argentina
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