本文選題：羥基磷灰石類　切入點(diǎn)：輻射劑量計(jì)　出處：《軍事醫(yī)學(xué)》2017年04期 　論文類型：期刊論文

【摘要】：目的研究含碳酸根羥基磷灰石(CHAP)材料的劑量學(xué)性能在不同環(huán)境條件下的穩(wěn)定性。方法采用定型壓片技術(shù)制備劑量計(jì)樣品,樣品經(jīng)60Coγ線輻照后分別貯存于不同溫度、濕度和不同光照背景條件下,采用電子自旋共振(ESR)技術(shù)定量分析輻射誘發(fā)的自由基。結(jié)果在實(shí)驗(yàn)觀測的3個(gè)月內(nèi),樣品在4℃或室溫下保存,信號(hào)變化均3%;40℃保存時(shí),信號(hào)變化約13%;室溫下當(dāng)濕度36%時(shí),信號(hào)變化2%;濕度為76%的高濕度組,信號(hào)變化約8%;但高溫高濕條件下信號(hào)強(qiáng)度并未明顯衰減。樣品在室溫下避光存放1年以上,其信號(hào)變化4.8%。平均照度1600 lux條件下,信號(hào)變化3.8%;在避光條件下,信號(hào)變化3.4%。結(jié)論在室溫自然環(huán)境條件下,該劑量計(jì)材料劑量學(xué)性能變化不明顯,即使較強(qiáng)光照對自由基信號(hào)的影響也不顯著,長期儲(chǔ)存未見信號(hào)明顯衰減,但高溫或高濕環(huán)境對樣品的測量過程有一定影響,在未來應(yīng)用中應(yīng)予以考慮。
[Abstract]:Objective to study the dosimetric properties of hydroxyapatite (CHAP) materials containing carbonates under different environmental conditions. Methods the dosimeter samples were prepared by the stereotype pressing technique, and the samples were stored at different temperatures after 60Co 緯 -ray irradiation. The electron spin resonance (ESR) technique was used to quantitatively analyze radiation-induced free radicals under different background conditions of humidity and light. Results during the three months of experimental observation, the samples were preserved at 4 鈩，

本文編號(hào)：1641173