Autor: Dryzek, E. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Positron Lifetime Studies of the Subsurface Zones Created under Dry and Lubrication Conditions
Autorzy:: Dryzek, J.
Dryzek, E.
Powiązania:: https://bibliotekanauki.pl/articles/2024223.pdf
Data publikacji:: 2001
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.70.Bj
Opis:: We present the measurement of the positron lifetime spectra in the subsurface zones in copper samples with surfaces damaged in dry and lubrication conditions. We observe that close to the damaged surface the single vacancies were present, but deeper in the sample treated in the dry condition the vacancy clusters were detected. A zone with dislocations was located deeper than the zone with the vacancies and their clusters.
Źródło:: Acta Physica Polonica A; 2001, 99, 3-4; 351-354
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Positron Annihilation Studies of the Subsurface Zone in Aluminium Alloys
Autorzy:: Dryzek, E.
Dryzek, J.
Powiązania:: https://bibliotekanauki.pl/articles/2047123.pdf
Data publikacji:: 2006-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.70.Bj
Opis:: The paper presents positron lifetime studies of the subsurface region of the aluminium cast AK64 alloy containing silicon as a main alloying element after sliding against stainless steel in the pin-on-disc tester. The subsurface zone of the depth exceeding 150μm has been detected. The scanning electron microscopy revealed only the plastically deformed region occurring at the depth up to ca. 50μm and cracks at the depth less than 30μm. The comparison with the results obtained for the AK12 alloy containing almost a twice higher amount of silicon demonstrates the influence of the hard silicon rich particles on the total depth of the subsurface zone. A higher amount of hard particle prevents to some extend the propagation of defects inside the material.
Źródło:: Acta Physica Polonica A; 2006, 110, 5; 569-575
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Positron Implantation Profile in Kapton
Autorzy:: Dryzek, J.
Dryzek, E.
Powiązania:: https://bibliotekanauki.pl/articles/2047124.pdf
Data publikacji:: 2006-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.70.-g
Opis:: The discussion presented in the paper focuses on processes accompanying positron implantation in condensed matter. They finally constitute the positron implantation profile which generally does not exhibit the exponential behavior as it is concluded from the Monte Carlo simulation made using the EGSnrc 4.0 code. The simulation was performed for the kapton and two commonly used positron sources $\text{}^{22}$Na and $\text{}^{68}$Ge/g$\text{}^{68}$Ga. New formula for the implantation profile was proposed.
Źródło:: Acta Physica Polonica A; 2006, 110, 5; 577-582
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: The implantation profile of positrons emitted in beta plus decay of 48V in water
Autorzy:: Dryzek, J.
Horodek, P.
Dryzek, E.
Powiązania:: https://bibliotekanauki.pl/articles/148130.pdf
Data publikacji:: 2009
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: positron implantation range in water
V-48 positron emitter
Opis:: The experimental technique based on scanning of positron implantation profile, hereafter referred to as the DSIP is used for the determination of linear absorption coefficient for positrons emitted from a 48V source into water. This coefficient is equal to 1/(299š62) mi m–1. The determined value is in agreement with the one obtained from the computer simulations using the well known EGS nrc 4.0 and GEANT4 codes. The experimental technique was used for the determination of linear absorption coefficients for 48V positrons in materials of biological origin. The presented data can be useful for PET studies because of similarities of the 18F and 48V positron implantation profiles.
Źródło:: Nukleonika; 2009, 54, 4; 223-226
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Defect Profile Induced by Friction and Wear Processes Detected by Positron Annihilation Method
Autorzy:: Dryzek, J.
Dryzek, E.
Cleff, B.
Powiązania:: https://bibliotekanauki.pl/articles/1933487.pdf
Data publikacji:: 1995-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.70.Bj
Opis:: The positron annihilation studies of defect profile in Cu samples whose surfaces were exposed to the friction and wear processes are presented. The values of the S-parameter and its dependences on the depth from the Cu surface are the functions of the value of the load applied in the sliding contact between two metals. It indicates possibilities of applying the presented measurement method in the industry.
Źródło:: Acta Physica Polonica A; 1995, 88, 1; 129-133
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 6.

Tytuł:: Preferential Positron Annihilation in Binary Alloys
Autorzy:: Kuriplach, J.
Dryzek, E.
Dryzek, J.
Šob, M.
Powiązania:: https://bibliotekanauki.pl/articles/2008109.pdf
Data publikacji:: 1999-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.70.Bj
71.60.+z
Opis:: The effect of preferential positron annihilation at individual constituent atoms in binary alloys is examined theoretically and experimentally. In particular, the results of recently studied alloys Fe-Al and Mg-Cd together with new preliminary results for the Sn-In system are discussed and summarised. In the case of the Sn-In system, the concentration dependencies of positron annihilation rates and Doppler broadening spectra are analysed.
Źródło:: Acta Physica Polonica A; 1999, 95, 4; 605-611
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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