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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=62" 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">我国实现世界最强极紫外激光 </h1> <p class="xg1"> 时间：2017-1-16 11:34<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1172)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=5260&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a>来自: 科学网</p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=62" 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>中国科学院研制的“大连光源”在1月15日成功发出了世界上最强的极紫外自由电子激光脉冲，单个皮秒激光脉冲产生140万亿个光子，成为世界上最亮且波长完全可调的极紫外自由电子激光光源。</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> 我国实现世界最强极紫外<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>！自由<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>激光是国际上最先进的新一代先进光源，也是当今世界先进国家竞相发展的重要方向，在科学研究、先进技术、国防科技发展中有着重要的应用前景。先进自由电子激光的发展在前沿科学研究中发挥着越来越重要的作用，特别是近十年来，自由电子激光技术的发展和突破为探索未知物质世界、发现新科学规律、实现技术变革提供了前所未有的研究工具。</div><div><br></div><div><div style="line-height: 25.2px;"><div style="line-height: 25.2px;"><span style="line-height: 25.2px;"><b><font color="#f00000"> 【扩展阅读】</font></b></span></div><div style="line-height: 25.2px;"><b style="line-height: 25.2px;"><font color="#0000f0"> <a href="http://www.oecr.com/article-5193.html" style="line-height: 25.2px;"><font color="#0000f0">盘点2016十大新型激光器</font></a></font></b></div></div><div style="line-height: 25.2px;"> <b><font color="#0000f0"> <a href="http://www.oecr.com/article-5211.html"><font color="#0000f0">冬季怎么对CO2激光切割机进行防冻</font></a></font></b></div></div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201701/16/113406u3lfk8obbstxzj3h.jpg" target="_blank"><img src="data/attachment/portal/201701/16/113406u3lfk8obbstxzj3h.jpg"></a></p></div><div><br></div><div> “自由电子激光能够给分子‘拍电影’，比如记录化学键断裂的动态过程，具有非常诱人的应用前景。”中科院上海应物所所长赵振堂说。<span style="line-height: 1.8em;">而要拍好这部“电影”，离不开神奇的极紫外光。</span><span style="line-height: 1.8em;">当波长短到100<a href="http://material.oecr.com" target="_blank" class="relatedlink">纳米</a>附近时，一个光子所具备的能量就足以电离一个原子或分子而又不会把分子打碎，这个波段的光称为极紫外光。</span></div><div><br></div><div> “在科学实验中，需要探测的原子或分子数量可能非常少，存在时间也非常短，普通的极紫外光源无法满足这个需求，必须要有高亮度的极紫外光源，即极紫外激光。”中科院大连化物所分子反应动力学国家重点实验室研究员戴东旭解释称，“极紫外激光只能在‘特殊物质’中产生，这个‘特殊物质’就是脱离原子核而单独存在的自由状态的电子。”<span style="line-height: 1.8em;">但是，一台运行在极紫外波段的自由电子激光设备在世界上尚属空白。</span><span style="line-height: 1.8em;">中国科学院研制的“大连光源”在1月15日成功发出了世界上最强的极紫外自由电子激光脉冲，单个皮秒激光脉冲产生140万亿个光子，成为世界上最亮且波长完全可调的极紫外自由电子激光光源。</span></div><div><br></div><div> 据介绍，在这样的极紫外光照射下，区域内几乎所有原子和分子都“无处遁形”。因此，“大连光源”可被用于观测与燃烧、大气以及洁净能源相关的<a href="http://theory.oecr.com" target="_blank" class="relatedlink">物理</a>化学过程。比如：能源、光学、物理、生物、<a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>、大气雾霾、光刻等多个重要领域。<span style="line-height: 1.8em;">目前，“大连光源”是我国第一台大型自由电子激光科学研究用户装置，是当今世界上唯一运行在极紫外波段的自由电子激光装置，也是世界上最亮的极紫外光源。</span></div><div><span style="line-height: 1.8em;"><br></span></div><div> 祝贺中国科学院！</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201701/16/113312iozzyf0fwv0ste0k.jpg" target="_blank"><img 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