DETERMINATION OF THE 3γ FRACTION FROM POSITRON ANNIHILATION IN MESOPOROUS MATERIALS FOR SYMMETRY VIOLATION EXPERIMENT WITH J-PET SCANNER

被引：32

作者：

Jasinska, B. ^{[1
]}

Gorgol, M. ^{[1
]}

Wiertel, M. ^{[1
]}

Zaleski, R. ^{[1
]}

Alfs, D. ^{[2
]}

Bednarski, T. ^{[2
]}

Bialas, P. ^{[2
]}

Czerwinski, E. ^{[2
]}

Dulski, K. ^{[2
]}

Gajos, A. ^{[2
]}

Glowacz, B. ^{[2
]}

Kaminska, D. ^{[2
]}

Kaplon, L. ^{[2
,3
]}

Korcyl, G. ^{[2
]}

Kowalski, P. ^{[4
]}

Kozik, T. ^{[2
]}

Krzemien, W. ^{[5
]}

Kubicz, E. ^{[2
]}

Mohammed, M. ^{[2
]}

Niedzwiecki, Sz. ^{[2
]}

Palka, M. ^{[2
]}

Raczynski, L. ^{[4
]}

Rudy, Z. ^{[2
]}

Rundel, O. ^{[2
]}

Sharma, N. G. ^{[2
]}

Silarski, M. ^{[2
]}

Slomski, A. ^{[2
]}

Strzelecki, A. ^{[2
]}

Wieczorek, A. ^{[2
,3
]}

Wislicki, W. ^{[4
]}

Zgardzinska, B. ^{[1
]}

Zielinski, M. ^{[2
]}

Moskal, P. ^{[2
]}

机构：

[1] Marie Curie Sklodowska Univ, Inst Phys, Dept Nucl Methods, Pl M Curie Sklodowskiej 1, PL-20031 Lublin, Poland

[2] Jagiellonian Univ, Fac Phys Astron & Appl Comp Sci, Lojasiewicza 11, PL-30348 Krakow, Poland

[3] Polish Acad Sci, Inst Met & Mat Sci, Reymonta 25, PL-30059 Krakow, Poland

[4] Natl Ctr Nucl Res, Swierk Comp Ctr, Soltana 7, PL-05400 Otwock, Poland

[5] Natl Ctr Nucl Res, High Energy Phys Div, Soltana 7, PL-05400 Otwock, Poland

来源：

ACTA PHYSICA POLONICA B | 2016年 / 47卷 / 02期

关键词：

HIT-POSITION RECONSTRUCTION; PLASTIC SCINTILLATORS; MODEL SIGNALS; SILICA-GEL; TIME; TOMOGRAPH; LIBRARY;

D O I：

10.5506/APhysPolB.47.453

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Various mesoporous materials were investigated to choose the best material for experiments requiring high yield of long-lived positronium. We found that the fraction of 3 gamma annihilation determined using gamma-ray energy spectra and positron annihilation lifetime spectra (PAL) changed from 20% to 25%. The 3 gamma fraction and o-Ps formation probability in the polymer XAD-4 is found to be the largest. Elemental analysis performed using scanning electron microscope (SEM) equipped with energy-dispersive X-ray spectroscope EDS shows high purity of the investigated materials.

引用

页码：453 / 460

页数：8

共 2 条

[1] A feasibility study of the time reversal violation test based on polarization of annihilation photons from the decay of ortho-Positronium with the J-PET detector
J. Raj
A. Gajos
C. Curceanu
E. Czerwiński
K. Dulski
M. Gorgol
N. Gupta-Sharma
B. C. Hiesmayr
B. Jasińska
K. Kacprzak
Ł. Kapłon
D. Kisielewska
K. Klimaszewski
G. Korcyl
P. Kowalski
T. Kozik
N. Krawczyk
W. Krzemień
E. Kubicz
M. Mohammed
Sz. Niedźwiecki
M. Pałka
M. Pawlik-Niedźwiecka
L. Raczyński
K. Rakoczy
Z. Rudy
S. Sharma
R. Y. Shivani
M. Shopa
M. Silarski
W. Skurzok
B. Wiślicki
P. Zgardzińska
Hyperfine Interactions, 2018, 239
[2] A feasibility study of the time reversal violation test based on polarization of annihilation photons from the decay of ortho-Positronium with the J-PET detector
Raj, J.
Gajos, A.
Curceanu, C.
Czerwinski, E.
Dulski, K.
Gorgol, M.
Gupta-Sharma, N.
Hiesmayr, B. C.
Jasinska, B.
Kacprzak, K.
Kaplon, L.
Kisielewska, D.
Klimaszewski, K.
Korcyl, G.
Kowalski, P.
Kozik, T.
Krawczyk, N.
Krzemien, W.
Kubicz, E.
Mohammed, M.
Niedzwiecki, Sz.
Palka, M.
Pawlik-Niedzwiecka, M.
Raczynski, L.
Rakoczy, K.
Rudy, Z.
Sharma, S.
Shivani
Shopa, R. Y.
Silarski, M.
Skurzok, M.
Wislicki, W.
Zgardzinska, B.
Moskal, P.
HYPERFINE INTERACTIONS, 2018, 239

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