1 / 10

H.-W. Becker, NUPECC Small Scale Facilities workshop, 7./8. Sep. 2007

Activities and Opportunities at the accelerator lab in Bochum. H.-W. Becker, NUPECC Small Scale Facilities workshop, 7./8. Sep. 2007. Experiment – 12 C( ,) 16 O Bochum Recoil Mass Separator ERNA. Sputter Ion Source I 20 pµA. 4MV Dynamitron Tandem Accelerator RUB. Recoil

penny
Download Presentation

H.-W. Becker, NUPECC Small Scale Facilities workshop, 7./8. Sep. 2007

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Activities and Opportunities at the accelerator lab in Bochum H.-W. Becker, NUPECC Small Scale Facilities workshop, 7./8. Sep. 2007

  2. Experiment – 12C(,)16O BochumRecoil Mass Separator ERNA Sputter Ion Source I20 pµA 4MV DynamitronTandem Accelerator RUB Recoil Focussing 4He Gas target E-E Telescope magnetic Quadrupols Wien-Filter Doublett Triplett Analysing magnet Singlett Ion beam Purification Wien-Filter Wien-Filter Side FC 60° Dipol magnet Wien-Filter Recoil Separation

  3. Experiment – 12C(,)16O BochumRecoil Mass Separator ERNA – Results DRAGON TRIUMF Matei et al. PRL 97 (2006) 242503 R-Matrix calculation Kunz et al. Ap.J. 567 (2002) 643 new complete R matrix calculation E1/E2 Data Stuttgart-Exp. Fey et al. (to be published) Karlsruhe BaF2-Ball

  4. Astrophysics with the Summing Crystal  4p-Geometry – summing over angular distribution  summing over cascades: Example: 88Sr(p,g)89Y (important for p-process) 88Sr(NO3)2-Target

  5. “seed “ abundances s process reaction network p-nuclei abundances p process The game of understanding p-process abundances Results: A. Spyrou, H.-W. Becker, A. Lagoyannis, S. Harissopulos and C. Rolfs, Phys. Rev. C, in print

  6. High Resolution Depth Profiling with Low Energy Nuclear Resonances: Lewis-peak 500 kV machine Ep = 417 keV Resonance in 29Si 1 nm beam resolution: 30-40 eV total resolution ~ 70 eV (mainly doppler broadening) 20 eV stability:

  7. Investigation of Diffusion Processes in Minerals Olivin (Fe,Mg)2SiO4 native sample artificial layer enriched in 29Si (PLD)

  8. High Energy Ion Projection field strength: 14 T MxE product: 100 MeV u/q2 demagnification: 15 mask area: Ø 30 mm resolution (PMMA): 0.3 m (0.6 MeV Si)

  9. 10 µm 103 N 104 N 105 N Nitrogen -Vacancy (NV)center fabrication in type IIa diamond 2 MeV N implantation + annealing Approx. 1-2 N iones/ N-V defect Meijer et al. APL 87 (2005)

More Related