دراسة تألق البراسيوديميوم المشوب في مركبات الفلورايد المحرضة بالأشعة السينية

Authors

  • أحمد خضرو
  • احمد بطيخ

Abstract

يعدّ هذا العمل استمراراً لدراسة أطياف تألق الإصدار التعاقبي لإيون البراسيوديميوم Pr3+ في قوالب متنوعة، فقد قمنا بدراسة هذه الأطياف لبلورة فلور الباريوم النقية والمشوبة بإيون البراسيودسميوم Pr3+ بالمقدارين 0.3% وَ 3%. أظهرت الدراسة القمم الطيفية المميزة 480nm, 392nm, 300nm والمقابلة لزمني تلاشٍ، الأول سريع 39ns والثاني بطيء 690ns، تم التركيز على مراكز التألق الممثلة بالانتقالين المشعين 1S0→1I0 كمرحلة أولى وَ 3P0→3Fj, 3Hj كمرحلة ثانية. وأخيراً تم استعراض الكمون المتوقع للمغنيزيوم ودراسته كمعوض شحنة للبراسيوديميوم في المركب SrAlF5.  تستخدم هذه البلورات في الأجهزة الليزرية وفي العددادات الوميضية.

أجريت القياسات في جامعة بطرس بورغ التكنولوجية الحكومية- روسيا الاتحادية عام 2006.

This work is a continuation of a study of the Pr3+ cascade emission in various matrices. The emission and excitation spectra of BaF2 doped with 0.3 and 3% Pr3+ were obtained. All spectra contain a broad band peaking at about 300nm, 392nm, 480nm. The fast one with a decay constant of 39 ns, and the slow one with a decay constant of 690 ns. The effect of the environment of the luminescence center, consists of two consecutive radiative transitions 1S0→1I0 (the first stage), and 3P0→3Fj, 3Hj (the second stage). The expecting potential of magnesium as a charge compensator for praseodymium in SrAlF5 is demonstrated. These crystals could be used in LASER equipments and in Luminescence Counters.

The measurements were done in Tech-governmental University of Petersburg- Russia, in year 2006.

Downloads

Published

2018-12-04

How to Cite

1.
خضرو أ, بطيخ ا. دراسة تألق البراسيوديميوم المشوب في مركبات الفلورايد المحرضة بالأشعة السينية. TUJ-BA [Internet]. 2018Dec.4 [cited 2024Nov.28];29(2). Available from: https://journal.tishreen.edu.sy/index.php/bassnc/article/view/5017

Issue

Vol. 29 No. 2 (2007): العلوم الأساسية

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to the Tishreen University Journal -Basic Sciences Series  

 Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in Tishreen University Journal -Basic Sciences Series .  The Readers have the right to send, print and subscribe to the initial version of the article, and the title of Tishreen University Journal -Basic Sciences Series   Publisher

 

journal uses a CC BY-NC-SA license which mean

You are free to:

  • Adapt — remix, transform, and build upon the material
  •  
  • The licensor cannot revoke these freedoms as long as you follow the license terms.

 

  • Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • NonCommercial — You may not use the material for commercial purposes.
  • ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
  • No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Most read articles by the same author(s)