Ceramah Ilmiah Prof. Takao IIda

Berikut kami sampaikan topik-topik ceramah ilmiah Prof. Takao IIDA, dari Nagoya University yang diadakan pada Hari Kamis, tanggal 15 Januari 2009 di Pusat Teknologi Keselamatan dan Metrologi Radiasi (PTKMR) BATAN dari pk 09.30 – 12.00. Profesor Takao IIDA adalah ahli proteksi radiasi, khususnya mengenai system proteksi radiasi lingkungan (radon, plutonium, dan lain-lain. Bila anda tertarik dengan materi presentasi atau memerlukannya kami dapat membantu untuk memperolehnya. Salam.

1. Vertical profiles of 222Rn concentrations in the upper atmosphere
○ Objects　
　　1. Radon behavior in the upper atmosphere　　　　　　　　　
　　2. Tracer as air pollution　　　　　　　　　　　　　　　　　　　　　　
　　3. Transport mechanism by clouds

○ Required characteristics for measuring method　　　
　　1. Measurable　less than 0.1 Bq m-3 accurately　　　　　　　　
　　2. Low background counting　　　　　　　　　　　　　　　　　　　　
　　3. Air sampling　　　　　　　　　　　　　　　　　　　　　　　　　　　　　
　　4. Can vacuum in the monitor5. Easy acquisition of data　　
　　5. Easy acquisition of data　　

2. Behavior of tritium in the environment Tracer for water（H2O）
１．Origin of tritium in the environment
２．Time variations of tritium concentration in rainfall
３．Time variations of tritium concentration in atmospheric water vapor
４．Long range transport of tritium in atmospheric water vapor
５．Measurements of atmospheric HTO, HT, CH3T
６．Measurement of tritium flux from the ground surface
７．Removal of atmospheric tritium due to rainfall

3. Behavior of atmospheric methane and CO in the environment
１．Contribution of greenhouse effect gas
２．Carbon isotopic ratio of methane from various origin
３．Separation procedure of atmospheric methane
４．Methane concentration and carbon isotopic ratio
５．Separation procedure of atmospheric CO
６．Measurement of atmospheric 14CO concentration　　　

4. Isotopes in Environmental Science
Purpose
• Development of carbon cycle evaluation method using carbon isotope ratios
• Evaluation environmental behavior of C-14 for radiological dose assessment
• Development of methodology of atmospheric tracer using radon isotopes

Themes

l Study on Carbon Cycle in Forest by Using Isotopic Information
l Study on Atmospheric Transport in East Asian Region Using Radon Isotopes as a Tracer.