News

Performance of the large-acceptance gas-filled spectrometer VAMOS

Saturday 3 April 2010, by Antoine Lemasson // Peer reviewed publications

A new gas-filled operation mode of the large-acceptance spectrometer VAMOS at GANIL is reported. A beam rejection factor greater than 1010 is obtained for the 40Ca+150Sm system at 196 MeV. The unprecedented transmission efficiency for the evaporation residues produced in this reaction is estimated to be around 80% for alpha xn channels and above 95% for xn-yp channels. A detailed study of the performance of the gas-filled VAMOS and future developments are discussed. This new operation mode (...) Read next

Physics Viewpoint

A 21st century Rutherford experiment

Monday 30 November 2009, by Antoine Lemasson // Peer reviewed publications

Our recent Phys. Rev. Lett. "Modern Rutherford experiment : Tunnelling of the most neutron-rich nucleus" was the subject of a Physics "Viewpoint" : A 21st century Rutherford experiment from Dieter Ackermann and Haik Simon. Physics highlights exceptional papers from the Physical Review journals. Read the Viewpoint on physics.aps.org Press Release : L’expérience fondatrice de Rutherford revisitée Read the CEA (Commissariat à l’Energie Atomique) Press Release Read the CNRS (Centre (...) Read next

Physical Review Letter

Modern Rutherford experiment : Tunnelling of the most neutron-rich nucleus

Monday 30 November 2009, by Antoine Lemasson // Peer reviewed publications

A modern variation of the Rutherford experiment to probe the tunneling of exotic nuclear matter from the measurement of the residues formed in the bombardment of 197Au by extremely neutron-rich 8He nuclei is presented. Using a novel off-beam technique the most precise and accurate measurements of fusion and neutron transfer involving re-accelerated unstable beams are reported. The results (...) Read next

Physical Review C : Rapid Com.

Prompt γ-ray spectroscopy of isotopically identified fission fragments

Friday 27 November 2009, by Antoine Lemasson // Peer reviewed publications

Measurements of prompt Doppler-corrected deexcitation γ-rays from uniquely identified fragments formed in fusion-fission reactions of the type 12C(238U,134Xe)Ru are reported. The fragments were identified in both A and Z using the magnetic spectrometer VAMOS. States built on the characteristic neutron configurations forming high spin isomers (7^− and 10+) in 134Xe are presented and compared (...) Read next

Workshop LEA Colliga

Friday 20 November 2009, by Antoine Lemasson // Seminar, Schools, and Workshops

23rd - 24th November 2009 "The Collaboration INFN-Ganil on nuclear structure, nuclear reactions and future ISOL based accelerators – (COLLIGA)" Oral Contribution Title : Interplay between structure and reaction mechanisms around the Coulomb barrier : Tunneling of the most neutron-rich nucleus (...) Read next

Fete de la Science 2009 - Atelier du Chercheur

Thursday 19 November 2009, by Antoine Lemasson // Seminar, Schools, and Workshops

Lors de cette édition 2009 de l’atelier du chercheur, j’ai présenté introduction à la physique nucléaire ainsi que mon travail de doctorant à des élèves de première et de seconde du Lycée Marie Curie de Vire. Qu’est que l’Atelier du Chercheur Organisés par Relais d’sciences, les Ateliers du chercheur sont l’occasion pour des doctorants, des chercheurs et des ingénieurs de sillonner la Basse-Normandie pour (...) Read next

Physical Review Letter

Exploring fusion at extreme sub-barrier energies with weakly bound nuclei

Tuesday 3 November 2009, by Antoine Lemasson // Peer reviewed publications

Results of measurement of residues formed in fusion of 6Li with 198Pt in the energy range of 0.68 using a new sensitive off-beam technique are reported. The fusion excitation function and the derived average angular momenta do not indicate a change of slope at deep sub- barrier energies, contrary to recent observations. The present results for a system with weakly bound (...) Read next

Ecole Joliot Curie 2009

Monday 12 October 2009, by Antoine Lemasson // Seminar, Schools, and Workshops

Oral Contribution (Webpage) Title : Modern Ruterford experiment : Tunneling of the most neutron rich nucleus 8He Abstract : Nearly a hundred years ago the scattering of alpha particles (4He) from gold atoms by Rutherford led to the discovery of the atomic nucleus. Today exotic nuclear species with weak binding, unusual neutron/proton asymmetry and extended spatial distributions (...) Read next

Latest articles

Isotopic resolution of fission fragments from 238U+12C transfer and fusion reactions

M. Caamaño, F. Rejmund, X. Derkx, K.-H. Schmidt, L. Andouin, C.-O. Bacri, G. Barreau, J. Benlliure, E. Casarejos, B. Fernández-Domínguez, L. Gaudefroy, C. Golabek, B. Jurado, A. Lemasson, A. Navin, (...) Read next

Oral Contribution : Colloque GANIL 2009

Oral Contribution : Colloque GANIL 2009 The XVIth "colloque GANIL" will be held from September 6th to 11th, 2009 in Giens (France). (Webpage) [HAL] Title : Interplay between structure and (...) Read next

Contact

Antoine LEMASSON GANIL, Bd Henri Becquerel BP 55027 - 14076 CAEN Cedex 05 France Tel +33 2 31 45 49 25 Fax +33 2 31 45 42 51 email Pro lemasson // at // ganil.fr email Perso (...) Read next

Latest articles