核技术
覈技術
핵기술
NUCLEAR TECHNIQUES
2010年
1期
31-34
,共4页
马卫江%唐强%张纯祥%刘小伟
馬衛江%唐彊%張純祥%劉小偉
마위강%당강%장순상%류소위
镝%锰%硼酸镁%热释光谱
鏑%錳%硼痠鎂%熱釋光譜
적%맹%붕산미%열석광보
Dy%Mn%MgB_4O_7%Thermoluminescent spectraCLC O483%TL818.4
本文制各了掺Dy和Mn的MgB_4O_7的磷光体,并测量其热释光发光谱.测量结果表明,MgB_4O_7:Mn的热释光发光峰位于180℃和300℃左右,其发光波长分布较宽,中心约为580 nm;而MgB_4O_7:Dy的热释光发光峰位于200℃和350℃,发光波长由Dy~(3+)离子的能级跃迁决定,位于480、580、680和750 nm左右.当两者共掺时,只改变Mn的浓度,测量结果发现,随着Mn掺杂浓度的增加,480 nm和680 nm左右的发光受到抑制,并且低温峰也受到强烈抑制,而580 nm的高温峰逐渐增强并且发光谱变宽.
本文製各瞭摻Dy和Mn的MgB_4O_7的燐光體,併測量其熱釋光髮光譜.測量結果錶明,MgB_4O_7:Mn的熱釋光髮光峰位于180℃和300℃左右,其髮光波長分佈較寬,中心約為580 nm;而MgB_4O_7:Dy的熱釋光髮光峰位于200℃和350℃,髮光波長由Dy~(3+)離子的能級躍遷決定,位于480、580、680和750 nm左右.噹兩者共摻時,隻改變Mn的濃度,測量結果髮現,隨著Mn摻雜濃度的增加,480 nm和680 nm左右的髮光受到抑製,併且低溫峰也受到彊烈抑製,而580 nm的高溫峰逐漸增彊併且髮光譜變寬.
본문제각료참Dy화Mn적MgB_4O_7적린광체,병측량기열석광발광보.측량결과표명,MgB_4O_7:Mn적열석광발광봉위우180℃화300℃좌우,기발광파장분포교관,중심약위580 nm;이MgB_4O_7:Dy적열석광발광봉위우200℃화350℃,발광파장유Dy~(3+)리자적능급약천결정,위우480、580、680화750 nm좌우.당량자공참시,지개변Mn적농도,측량결과발현,수착Mn참잡농도적증가,480 nm화680 nm좌우적발광수도억제,병차저온봉야수도강렬억제,이580 nm적고온봉축점증강병차발광보변관.
MgB_4O_7 phosphors doped with Mn and Dy were prepared, and thermoluminescence spectra were observed. The results based on the thermoluminescence spectra show that the glow peaks located in 580 nm broad wavelength band were observed at 180℃ and 300℃ for MgB_4O_7:Mn, and the ones of 480, 580, 680 and 750 nm due to the energy transitions of Dy~(3+) were observed at 200℃ and 350℃ for MgB_4O_7:Oy. It was found that for MgB_4O_7 co-doped with 0.5 mol% Dy and 0.05-1.0 mol% Mn, the peaks of 480, 680 and 750 nm became weak, and so did the low temperature peaks, while the peak of 580 nm at 350℃ became stronger, and broader.
