Development of a high intensity low energy positron beam

1994 ◽  
Author(s):  
W. B. Waeber ◽  
M. Shi ◽  
D. Taqqu ◽  
U. Zimmermann ◽  
D. Gerola ◽  
...  
Keyword(s):  
High Intensity ◽  
Positron Beam ◽  
Low Energy

scholarly journals NEPOMUC: Neutron induced positron source Munich

2015 ◽  
Vol 1 ◽  
Author(s):  
Christoph Hugenschmidt ◽  
Christian Piochacz
Keyword(s):  
Solid State ◽  
Atomic Physics ◽  
High Intensity ◽  
Beam Energy ◽  
Positron Beam ◽  
Low Energy ◽  
Surface Physics ◽  
Positron Source ◽  
Fundamental Research

NEPOMUC, operated by the Technische Universität München and the Universität der Bundeswehr München, provides a high-intensity low-energy positron beam for applications in solid state and surface physics as well as for fundamental research in nuclear and atomic physics. The intensity amounts to &gt; 10<sup>9</sup> moderated positrons per second at a beam energy of E = 1 keV.

Special Aspects of High-Intensity Low-Energy Ion Implantation

2021 ◽  
Author(s):  
A. I. Ryabchikov ◽  
A. I. Ivanova ◽  
O. S. Korneva ◽  
D. O. Sivin
Keyword(s):  
Ion Implantation ◽  
High Intensity ◽  
Low Energy

scholarly journals DETERMINING THE SIGN OF Δ31 AT LONG BASELINE NEUTRINO EXPERIMENTS

2001 ◽  
Vol 16 (29) ◽  
pp. 1881-1886
Author(s):  
MOHAN NARAYAN ◽  
S. UMA SANKAR
Keyword(s):  
High Intensity ◽  
Low Energy ◽  
Earth’S Crust ◽  
Mixing Angle ◽  
Background Ratio ◽  
Matter Effects ◽  
Long Baseline ◽  
Earth's Crust ◽  
Neutrino Experiments

Recently it is advocated that high intensity and low energy (Eν~2 GeV ) neutrino beams should be built to probe the (13) mixing angle ϕ to a level of a few parts in 104. Experiments using such beams will have better signal-to-background ratio in searches for νμ→νe oscillations. We propose that such experiments can also determine the sign of Δ31 even if the beam consists of neutrinos only. By measuring the νμ→νe transitions in two different energy ranges, the effects due to propagation of neutrinos through earth's crust can be isolated and the sign of Δ31 can be determined. If the sensitivity of an experiment to ϕ is ε, then the same experiment is automatically sensitive to matter effects and the sign of Δ31 for values of ϕ≥2ε.

Low energy positron beam studies of nano-TiN films

1994 ◽  
Vol 26 (2-3) ◽  
pp. 163-166 ◽  
Author(s):  
Huimin Weng ◽  
Dazhi Wang ◽  
Rongdian Han ◽  
Yi Jiang ◽  
Genqing Yang ◽  
...  
Keyword(s):  
Positron Beam ◽  
Low Energy ◽  
Tin Films

High Intensity Positron Beam Generation by Synchrotron Radiation

1994 ◽  
Vol 175-178 ◽  
pp. 137-140
Author(s):  
V.N. Belyaev ◽  
I.S. Voronchev ◽  
G.N. Kulipanov ◽  
A.N. Mikheev ◽  
A.N. Skrinsky
Keyword(s):  
Synchrotron Radiation ◽  
High Intensity ◽  
Positron Beam ◽  
Beam Generation

Investigation of surface defects on Ni(110) with a low-energy positron beam

1987 ◽  
Vol 35 (3) ◽  
pp. 1034-1038 ◽  
Author(s):  
A. R. Köymen ◽  
D. W. Gidley ◽  
T. W. Capehart
Keyword(s):  
Surface Defects ◽  
Positron Beam ◽  
Low Energy

Defect Formation by Ion Implantation in Cz-Si Studied by a Monoenergetic Positron Beam

1992 ◽  
Vol 262 ◽  
Author(s):  
A. Uedono ◽  
Y. Ujihira ◽  
L. Wei ◽  
Y. Tabuki ◽  
S. Tanigawa ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Ion Implantation ◽  
Defect Formation ◽  
Positron Beam ◽  
Low Energy ◽  
Doppler Broadening ◽  
Positron Energy ◽  
Annealing Experiments ◽  
Incident Positron ◽  
Ion Implanted

ABSTRACTVacancy-type defects in ion implanted Si were studied by a monoenergetic positron beam. The depth-distributions of the defects were obtained from measurements of Doppler broadening profiles of the positron annihilation as a function of incident positron energy. The results showed that a size of vacany-clusters introduced by 150-keV P+-ion implantation was found to be smaller than that introduced by 2-MeV P+-ion implantation. This was attributed to an overlap of collision cascades in low-energy (150 keV) ion implanted specimens. From isochronal annealing experiments for 80-keV B+- and 150-keV P+-ion implanted specimens, the defected region was removed by 1200 °C annealing, however, for 2-MeV P+-implanted specimen, two-types of oxygen-vacancy complexes were found to coexist even after 1200 °C annealing.

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