Results 91 to 100 of about 144,387 (227)

Positron annihilation studies in gamma irradiated polyesters

, 2011
Positron annihilation studies in gamma irradiated ...
CONSOLATI, GIOVANNI, MARIANI, MARIO, QUASSO, FIORENZA   +2 more
core  

Positron Annihilation: Industrial Applications Develop

, 1994
Positrons are often associated with high-energy physics and accelerators, and hence are thought to occupy the realm of basic science. Less well known is the important role they play in materials science after it was discovered in the second half of the ...
Mijnarends, P.J., P.J. Mijnarends
core   +1 more source

Positron annihilation spectroscopy on a beam of positrons the LEPTA facility

EPJ Web of Conferences, 2017
The results and possibilities of the samples surfaces research by the Doppler method of positron annihilation spectroscopy (PAS) for a monochromatic beam of positrons at the LEPTA facility are presented in this paper.
Ahmanova E.V., Eseev M.K., Kobets A.G., Meshkov I.N., Orlov O.S., Sidorin A.A., Siemek K., Horodek P.   +7 more
doaj   +1 more source

Positron annihilation studies of defects in Si1-xGex/SOI heterostructures

, 2009
The strain of a SiGe alloy epitaxially grown on Si can be released by heating at 750°C. However the strain relaxation is accompanied by the generation of threading dislocations and associated point defects.
A. FEDOROV, NORGA, GERD JOHAN MARIA, ISELLA, GIOVANNI, MOIA, FABIO, D. MARONGIU, DUPASQUIER, ALFREDO, CHRASTINA, DANIEL, FERRAGUT, RAFAEL OMAR, CALLONI, ALBERTO   +8 more
core  

Multimode Vibrational Couplings in Resonant Positron Annihilation

, 2011
The mechanisms for multimode vibrational couplings in resonant positron annihilation are not well understood. We show that these resonances can arise from positron-induced distortions of the potential energy surface (target response to the positron field)
LIMA, Marco A. P., Varella, Marcio Teixeira do Nascimento, SANCHEZ, Sergio d'A.   +2 more
core   +1 more source

Study on the concentration and size of vacancy defect in W-K alloy

四川大学学报. 自然科学版, 2019
W-K alloy has many advantages, such as high melting point, the resistance to thermal shock, and excellent resistance to helium hydrogen plasma irradiation.
ZHANG Yuan-Yuan, LIU Nan-Shun, ZHANG Pei-Yuan, DENG Ai-Hong   +3 more
doaj  

Positron–Electron Annihilation in Hydrogen–Antihydrogen Collisions

, 2004
The rate of direct positron–electron annihilation in cold hydrogen–antihydrogen collisions has been calculated and compared to the rate of proton–antiproton annihilation. We show that the lepton annihilation rate in H̄H collisions depends on the relative
Dalgarno, A., Jonsell, S., A. Saenz, S. Eriksson, B. Zygelman, P. Froelich, S. Jonsell, Froelich, P., Saenz, A., Eriksson, S., A. Dalgarno, Zygelman, Bernard   +11 more
core   +1 more source

Low-energy supernova constraints on millicharged particles

Journal of High Energy Physics
The hot and dense conditions of the supernova core provide an ideal environment for the production of new feebly-interacting particles. Low-energy supernovae, characterized by low explosion energy, are particularly intriguing due to their stringent ...
Changqian Li, Zuowei Liu, Wenxi Lu, Zicheng Ye   +3 more
doaj   +1 more source

Atomic ionization at positron annihilation at β+-decay with taking into account screening [PDF]

Ядерна фізика та енергетика, 2012
The role of the nuclear charge screening and correctness of Born approximation for electron which is leaving atom in the process of atomic ionization at annihilation of positron with another electron of daughter's atom at β+-decay is studied. Processes
S. N. Fedotkin
doaj  

New insights into the nanostructure of innovative thin film solar cells gained by positron annihilation spectroscopy

, 2017
Recent studies showed that positron annihilation methods can provide key insights into the nanostructure and electronic structure of thin film solar cells.
Saniz, Rolando, Mannheim, A. (author), Egger, W, Cahen, D., Zeman, M. (author), Hodes, G. (author), Egger, W., A H M Smets, Saniz, R (author), Shi, W. (author), Callewaert, V., Partoens, Bart, Smets, A.H.M, Hugenschmidt, C, Zeman, M., Butterling, M, Meulenberg, R.W. (author), Melskens, J. (author), Meulenberg, R.W, Bansil, A (author), Saniz, R, Callewaert, V, Zeman, M, Meulenberg, R.W., Shi, W., A Mannheim, Bansil, Arun, Meulenberg, Robert W, Dickmann, M. (author), D Cahen, A Bansil, Dickmann, M, Partoens, B (author), J Melskens, Smets, A.H.M. (author), M Zeman, Eijt, S.W.H, B Barbiellini, Shakeri, B, Egger, Werner, Cahen, D. (author), R W Meulenberg, Barbiellini, B (author), Schut, H, Mannheim, A, Hodes, G, Melskens, J Jimmy, Bansil, A, Brück, E.H. (author), Hugenschmidt, C (author), Melskens, J., Butterling, M., S W H Eijt, W Shi, Dickmann, Marcel, Melskens, J, Schut, H., Callewaert, V. (author), W Egger, Shakeri, B. (author), Saniz, Ronaldo, Barbiellini, Bernardo, Barbiellini, B., M Butterling, Bruck, E., Hodes, Gary, Shakeri, Behtash, H Schut, Egger, W (author), Eijt, SWH, Barbiellini, B, Meulenberg, R. W., Kulbak, M, Bansil, A., R Saniz, V Callewaert, Smets, A.H.M., Shi, W, Eijt, S.W.H. (author), Hugenschmidt, Christoph P, Mannheim, A., Hugenschmidt, C., B Shakeri, G Hodes, Hodes, G., Brück, E.H., Smets, A. H. M., E Brück, Partoens, B, Schut, H. (author), Shi, Wenqin, Kulbak, M. (author), Brück, E, C Hugenschmidt, Zeman, Miro, Dickmann, M., Callewaert, Vincent, Kulbak, Michael, Butterling, M. (author), Kulbak, M., Cahen, D, B Partoens, Butterling, Maik, Smets, Arno HM, Cahen, David, Shakeri, B., Eijt, S.W.H., M Dickmann, M Kulbak   +108 more
core   +2 more sources