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Studying the luminescence of Praseodymium doped in Crystals Li2YB5O10, LaF3 under X-ray Excitation

دراسة تألق البراسيوديميوم Pr في البلورات Li2YB5O10, LaF3 بتهييجها بالأشعة السينية X-ray

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 Publication date 2014
  fields Physics
and research's language is العربية
 Created by Shamra Editor




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This research could be considered as a continuous study of luminescence spectrum of praseodymium cascade photon emission Pr3+ of 1% ions effect on Li2YB5O10 and LaF3 crystals. The Li2YB5O10 crystal shows many spectrum peaks, mainly of 272nm and 300nm wavelengths of luminescence decay τ=10.6 ns. The other crystal LaF3 shows two sharp spectrums of 478.6nm and 485.5nm wavelengths, which are due to the energetic transitions of 3P0→3H4 of luminescence decay τ=1.8 ns. This study proves that these two crystals exhibit good luminescence properties as promising compounds for laser and medical equipments to be used in radiation detectors and other research domains. The measurements were done in Tech-governmental University of Petersburg, Russia, 2008.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة الطيف التألقي للإصدار الفوتوني التدفيقي لإيون البراسيوديميوم (Pr3+) بنسبة 1% في بلورات Li2Yb5O10 وLaF3 عند تهييجها بالأشعة السينية. أظهرت بلورة Li2Yb5O10 قمم طيفية رئيسية عند الأطوال الموجية 272nm و300nm بزمن تألق 10.6ns، بينما أظهرت بلورة LaF3 خطين طيفيين حادين عند الأطوال الموجية 478.6nm و485.5nm بزمن تألق 1.8ns. تشير النتائج إلى أن هذه البلورات تتمتع بخصائص تألقية جيدة، مما يجعلها واعدة لتطوير أجهزة الليزر والمعدات الطبية وكواشف الإشعاع. أجريت القياسات في جامعة بطرس بورغ التكنولوجية الحكومية في روسيا عام 2008.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة في مجال تحسين خصائص التألق للمواد المستخدمة في التطبيقات الطبية والعلمية. ومع ذلك، كان من الأفضل تضمين مزيد من التفاصيل حول تأثيرات التراكيز المختلفة لإيون البراسيوديميوم على الخصائص التألقية للبلورات. كما أن الدراسة كانت تعتمد بشكل كبير على القياسات التجريبية دون تقديم تفسير نظري كافٍ للنتائج. بالإضافة إلى ذلك، كان من الممكن توسيع نطاق البحث ليشمل مواد أخرى لتحسين الفهم الشامل للظاهرة المدروسة.
Questions related to the research
  1. ما هي الأطوال الموجية الرئيسية التي أظهرتها بلورة Li2Yb5O10 عند تهييجها بالأشعة السينية؟

    أظهرت بلورة Li2Yb5O10 قمم طيفية رئيسية عند الأطوال الموجية 272nm و300nm.

  2. ما هو زمن التألق للبلورة LaF3 عند الطول الموجي 485.5nm؟

    زمن التألق للبلورة LaF3 عند الطول الموجي 485.5nm هو 1.8ns.

  3. ما هي التطبيقات المحتملة للبلورات المدروسة في هذا البحث؟

    التطبيقات المحتملة تشمل تطوير أجهزة الليزر، المعدات الطبية، وكواشف الإشعاع.

  4. أين أجريت القياسات التجريبية لهذه الدراسة؟

    أجريت القياسات في جامعة بطرس بورغ التكنولوجية الحكومية في روسيا عام 2008.


References used
YAMADA ET AL. A scintillator Gd2O2S:Pr for X-ray computed tomography, Jour. Electrochem. Soc, Russian, vol. 136, N. 9,1989, p.p. 2713-2731
KHADRO A., The wave length and spectral time measurement of the high yield phospharite compounds, Tishreen Univ. Journal, Syria, Lattakia, vol. 25, 2003, p.p. 230-237
KYOO SHIM., HYUN YANG, YE JEONG , Enhanced luminescent characteristics of laser-ablated GdVO4: Eu3+ thin films by Li doping, Applied Surface Science, V. 235, 2007, p.p. 8146-8150
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