Atmospheric activity concentration of 7Be in the air was monitored during the period of one year from September 2015 to September 2016 at Ostrava, Czech Republic, with a two-day frequency that is shorter compared to a standard 7-day frequency of routine 7Be measurements. Simultaneously, relevant meteorological data (temperature, rainfall amount, precipitation particle size and speed, tropopause height, and PM10 concentrations) and the sunspot number were accumulated. Weighted linear regression analysis applied to the 7Be atmospheric activity concentration, the measured meteorological explanatory variables and the sunspot number revealed temperature as the most statistically significant explanatory variable. The tree model proved temperature as the most important explanatory variable and predicted the threshold value separating low and high temperature behavior of 7Be at about 13 °C (2-day average). A simple local two-layer (stratosphere and troposphere) atmospheric model was then applied to the data analysis. The model is able to fit the data for a larger accumulation period (6 days).
- MeSH
- Beryllium MeSH
- Time Factors MeSH
- Air Pollutants MeSH
- Radiation Monitoring * MeSH
- Environmental Monitoring MeSH
- Radioisotopes MeSH
- Seasons MeSH
- Temperature MeSH
- Particle Size MeSH
- Publication type
- Journal Article MeSH
- Geographicals
- Czech Republic MeSH
This paper introduces a novel neutron production system for Boron Neutron Capture Therapy (BNCT) that employs a lithium beam in inverse kinematics to generate forward-directed neutrons through the 7Li (p,n)7Be reaction. The system utilizes a thin polypropylene target and an optimized beam configuration to achieve high neutron yield and precise directional control. A tape target mechanism is incorporated to effectively manage thermal loads, ensuring stable and reliable operation. The proposed system could offer substantial advantages over conventional neutron sources, including enhanced neutron directionality and a reduced shielding requirement. This approach increases the potential for precise tumor targeting while minimizing exposure to surrounding healthy tissues, paving the way for a more accessible and efficient BNCT treatment option.
- Publication type
- Journal Article MeSH
