Monte Carlo simulation of α recoil migration of plutonium aerosol
10.13491/j.issn.1004-714X.2023.04.006
- VernacularTitle:钚气溶胶α反冲迁移的蒙卡模拟
- Author:
Chuanlong LI
1
;
Jinsen GUO
1
;
Chuangao WANG
1
;
Hongchao PANG
1
;
Senlin LIU
1
Author Information
1. China Institute of Atomic Energy, Beijing 100023 China.
- Publication Type:OriginalArticles
- Keywords:
Plutonium;
Aerosol;
α recoil;
Monte Carlo
- From:
Chinese Journal of Radiological Health
2023;32(4):398-401
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the migration of plutonium aerosol caused by α recoil. Methods In this paper, the recoil deposition and Brownian motion of plutonium-containing nanoaerosols were simulated by Monte Carlo method. The recoil angle and the vertical first landing time of Brownian motion in the process of settling were sampled, and then the lateral displacements of Brownian motion were sampled to determine the final settling position of aerosol. Results For aerosols with particle sizes of 10-50 nm, the maximum migration distance of a single recoil settling was 1.39 μm. Brownian motion increased the migration capacity. Although there was a high likelihood that aerosols settled within 100 μm, there remained a slight probability of long-term suspension in the air. Conclusion The α recoil is one of the mechanisms of plutonium aerosol migration. An important mechanism for long-distance migration of nanoaerosols is that Brownian motion after recoil may cause them to suspend for a long time.
