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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">重磅！西安光机所成功研制国内首个光阴极X射线管 </h1> <p class="xg1"> 时间：2020-8-31 09:44<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(688)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=8664&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a>来自: 西安光机所</p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>近日，西安光机所光电子学研究室联合条纹相机工程中心，研制出国内首个光阴极X射线管。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div> 近日，西安光机所光<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>学研究室联合条纹相机工程中心，研制出国内首个光阴极X射线管。该光阴极X射线管出射X射线强度可调，能量范围宽（1keV～100keV），脉冲宽度窄（可达皮秒量级），该技术成功打破其它国家技术垄断。</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/202008/31/094342xvrvrjql8z9lfr8r.jpg" target="_blank"><img src="data/attachment/portal/202008/31/094342xvrvrjql8z9lfr8r.jpg"></a></p></div><div><br></div><div> 传统的X射线管采用热阴极方式发射电子，电子再被高压电场加速轰击金属靶产生X射线。由于热阴极X射线管能耗高、电子束流强度与脉冲宽度调制困难，在某些特殊应用领域受到了极大限制。</div><div><br></div><div> 而在光阴极X射线管中，电子发射单元由传统的热阴极改为对光敏感的光阴极，出射X射线的强度和时间特性完全由调制光信号的特征决定，因此，光阴极X射线管的响应速度得到了大大提升。</div><div><br></div><div> 未来，利用该技术可望实现<a href="http://ofc.oecr.com" target="_blank" class="relatedlink">通信</a>速率Gbps量级的空间X射线通信应用，同时还可应用在医学动态CT、辐射定标和闪烁体余辉<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测量</a>等多个领域，对相关学科的交叉融合与持续发展产生极大的推动作用。</div><div><br></div><div> 多年来，光电子学研究室瞄准重大科技前沿和国民经济需求，致力于X射线产生、聚焦、探测等技术领域研究，凝聚了一支年轻的科研团队，在X射线脉冲星导航技术，X射线空间通信等研究方面取得了一系列的科研成果，助力X射线相关技术成为西安光机所独具特色的研究方向。</div><div><br></div><div><br></div><div><p style="text-align: center; overflow-wrap: normal; margin: 0px; padding: 0px; color: rgb(143, 143, 143); font-family: Tahoma, "Microsoft Yahei", Simsun;"><a href="http://www.oecr.com/data/attachment/portal/202008/26/102900rcqumq1efrr1eeyu.jpg" target="_blank" style="overflow-wrap: normal; color: rgb(51, 51, 51); text-decoration-line: none; transition: all 0.2s linear 0s; font-family: 微软雅黑;"><img 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