رشد تک بلور هالید قلیایی یدید سزیم در کوره پنج منطقه‌ای با روش بریجمن

نوع مقاله : مقاله پژوهشی

نویسندگان

1 پـژوهشگاه علوم و فنون هسته‌ای

2 دانشگاه شهید بهشتی

چکیده

 در این پژوهش تک­بلور هالید قلیایی یدید سزیم به روش بریجمن عمودی رشد داده شد. به این منظور یک کوره المنتی استوانه­ای عمودی با پنج منطقه گرمایی و قابلیت ایجاد شیب دمایی قابل کنترل در هر منطقه تا دمای oC 1000 و با دقت  oC1/0 طراحی و ساخته شد. نمونه بلور ساخته شده با پراش پرتو ایکس و طیف نورتابی بررسی شد. همچنین سختی نمونه ساخته شده و حک حفره­های تک بلور اندازه­گیری شدند. با توجه به اینکه یدید سزیم خالص خاصیت سوسوزنی هم دارد، طیف­نگاری پرتوی گامای نمونه نیز انجام شد.     

کلیدواژه‌ها

عنوان مقاله [English]

The growth of alkali halide cesium iodide single crystal in five zone furnace by Bridgman method

چکیده [English]

In this research, the vertical Bridgman method has used to perform the single crystal growth of cesium iodide alkali halide. To this purpose, a vertical cylindrical furnace equipped with electric elements with five different thermal regions has been designed and constructed. The temperature gradient of the furnace can be controlled up to 1000○C with 0.1○C accuracy. Several cesium iodide sample crystals has been grown with this furnace and then the X-ray diffraction characterizations have been undertaken. The photoluminescence spectrum and the hardness properties of the crystals samples have been studied as well as the measurements of etch-pits of single crystals. Since the pure cesium iodide exhibits scintillation properties, the gamma-ray spectroscopy has also been undertaken.  

کلیدواژه‌ها [English]

  • Alkali halide
  • Bridgman method
  • Cesium Iodide
  • XRD
  • Hardness
  • etch pits

مراجع

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سابقه مقاله

  • تاریخ دریافت: 16 اردیبهشت 1396
  • تاریخ بازنگری: 08 مهر 1396
  • تاریخ پذیرش: 30 آبان 1396

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