| 摘要 |
<p>PROBLEM TO BE SOLVED: To accurately measure radiation dose other thanγrays by calculating the amount of compensation for compensating for the detection amount of theγrays of a detector other than theγrays based on the count value of aγ-ray detector, and by integrating the difference between the count value and the amount of compensation. SOLUTION: The exposure dose ofγrays is calculated according to an integration count value up to the end of work. On the other hand, the exposure dose ofβrays is calculated according toβ- andγ-ray trend count values from the start to end of the work. Time from the start to end of the work is divided by the interval of five minutes. The amount ofγ-ray compensation for each division time interval is calculated according toγ-ray count value for each division time interval, namely theγ-ray trend count value. On the other hand, the amount ofγ-ray compensation is subtracted fromβ-ray count value for each division time interval, namely theβ-ray trend count value, and the count value corresponding to the amount of theβrays for each division time interval is calculated. Only positive count values corresponding to the amount of theβrays for each division time interval are integrated over working time, and the integration value is set to the counter value corresponding to the amount of theβrays at the working time, thus the exposure dose of theβrays can be calculated.</p> |
