A new physical model of Geiger-mode avalanche photodiodes

被引:1
|
作者
Ahmadov, F. [1 ,3 ]
Abdullayev, F. [1 ]
Ahmadov, G. [1 ,2 ]
Akbarov, R. [2 ,3 ]
Mukhtarov, R. [5 ]
Nuriyev, S. [2 ,4 ]
Sadigov, A. [2 ,3 ]
Sadygov, Z. [2 ,4 ]
Suleymanov, S. [1 ]
机构
[1] Ctr Strateg Sci Res ANAS, Istiglaliyyat Str 30, AZ-1001 Baku, Azerbaijan
[2] Joint Inst Nucl Res, Joliot Curie 6, Dubna 141980, Russia
[3] Natl Nucl Res Ctr MTCHT, Inshaatchilar 4, AZ-1073 Baku, Azerbaijan
[4] Inst Radiat Problems ANAS, B Vahabzade 9, AZ-1143 Baku, Azerbaijan
[5] Natl Aviat Acad, AZ-1045 Baku, Azerbaijan
来源
JOURNAL OF INSTRUMENTATION | 2020年 / 15卷 / 01期
关键词
Gamma camera; SPECT; PET PET/CT; coronary CT angiography (CTA); Photon detectors for UV; visible and IR photons (gas) (gas-photocathodes; solid-photocathodes); Photon detectors for UV visible and IR photons (solid-state) (PIN diodes; APDs; Si-PMTs; G-APDs; CCDs; EBCCDs; EMCCDs; CMOS imagers etc); Solid state detectors;
D O I
10.1088/1748-0221/15/01/C01009
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
A new physical model of avalanche process with single photon detection capabilities is presented. The model describes the avalanche process, taking into account the resistance of space charge, parasitic capacitance as well as the changes of electric field during avalanche process caused by internal discharge and external recharge currents. The results of simulation are compared with the experimental data obtained with photodiodes from different manufacturers. It was determined that at a fixed value of overvoltage, the signal gain decreases significantly, depending on the resistance of the space charge region. This paper presents also the possibilities for improving the parameters of silicon photomultipliers.
引用
收藏
页数:8
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