Filipecki Jacek, Korzekwa Piotr, Filipecka Katarzyna, Dorobanow Manol, Korzekwa Dominika, Korzekwa Witold, Hyla Małgorzata
Instytut Fizyki, Zakład Badań Strukturalnych i Fizyki Medycznej, Akademia im. Jana Długosza w Czestochowie.
Polim Med. 2010;40(4):27-33.
Positron annihilation lifetime spectroscopy has been applied of free volume properties in bifocal contact lenses. The measurements have been made on new lenses and then after one, and two weeks wearing by the patient. The longest lifetime, obtained via three-component analyses of the spectra, was associated with the pick-off annihilation of ortho-positronium trapped in the free volume. After one, and two weeks wearing of the lenses changes in the ortho-positronium lifetimes and the relative intensity of the longest component were observed. These results are discussed on the basis of a free volume model.
正电子湮没寿命谱已应用于双焦点隐形眼镜的自由体积特性研究。对新镜片进行了测量，然后在患者佩戴一周和两周后再次测量。通过光谱的三组分分析得到的最长寿命与捕获在自由体积中的仲正电子素的拾取湮没有关。在佩戴镜片一周和两周后，观察到仲正电子素寿命和最长组分相对强度的变化。基于自由体积模型对这些结果进行了讨论。
