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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">粒子探测实用产品－同步辐射光源 </h1> <p class="xg1"> 时间：2016-7-25 17:05<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1592)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=4655&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a></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>速度接近光速的带电粒子在磁场中作圆周运动时，会沿着偏转轨道切线方向发射连续谱的电磁波（左图）。1947年人类在电子同步加速器上首次观测到这种电磁波，并称其为同步辐射，后来又称为同步辐射光。同步辐射最初是作 ...</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"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"> <P align=left>速度接近光速的带电粒子在磁场中作圆周运动时，会沿着偏转轨道切线方向发射连续谱的电磁波（左图）。</SPAN><FONT face=宋体><SPAN lang=EN-US>1947</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">年人类在<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>同步加速器上首次观测到这种电磁波，并称其为同步辐射，后来又称为同步辐射光。同步辐射最初是作为电子同步加速器的有害物而加以研究的，后来成为一种从红外到硬</SPAN><SPAN lang=EN-US>X</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">射线范围内有着广泛应用的高性能光源。同步辐射光源是开展凝聚态<a href="http://theory.oecr.com" target="_blank" class="relatedlink">物理</a>、<a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>科学、生命科学、资源环境及微电子技术等多学科交叉前沿研究的重要平台。</SPAN></FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>等离子体光属于价格便宜、易于操作的光源，可以用于</SPAN><FONT face=宋体><SPAN lang=EN-US>X</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">射线显微术，象电子扫描显微镜一样作为实验室的常规分析工具。其基本原理是：当高强度</SPAN><SPAN lang=EN-US>(1014</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">～</SPAN><SPAN lang=EN-US>1015 W/cm2)</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">激光脉冲聚焦打在固体靶上时，靶的表面迅速离化形成高温高密度的等离子体，进而发射</SPAN><SPAN lang=EN-US>X</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">射线。它是一种具有足够辐射强度的独立点光源，所用泵浦激光器主要有</SPAN><SPAN lang=EN-US>Nd:YAG</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，钕玻璃和</SPAN><SPAN lang=EN-US>KrF</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">等。</SPAN><SPAN lang=EN-US>X</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">射线发射与靶材料有关，由于溅射残屑可能损伤和污染光学系统和样品，若用气体靶代替固体靶可以避免残屑问题。因此，需要进一步研究开发有效的、高重复频率工作的、不产生残屑的激光等离子体</SPAN><SPAN lang=EN-US>X</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">射线光源。</SPAN> <SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">同步辐射光源</SPAN><SPAN lang=EN-US> </SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">速度接近光速的带电粒子在磁场中作圆周运动时，会沿着偏转轨道切线方向发射连续谱的电磁波（左图）。</SPAN><SPAN lang=EN-US>1947</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">年人类在电子同步加速器上首次观测到这种电磁波，并称其为同步辐射，后来又称为同步辐射光。同步辐射最初是作为电子同步加速器的有害物而加以研究的，后来成为一种从红外到硬</SPAN><SPAN lang=EN-US>X</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">射线范围内有着广泛应用的高性能光源。同步辐射光源是开展凝聚态物理、材料科学、生命科学、资源环境及微电子技术等多学科交叉前沿研究的重要平台。</SPAN></FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><FONT face=宋体><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"></SPAN></FONT> </P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal align=center><FONT face=宋体><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><A href="http://www.oecr.com/data/attachment/portal/201607/25/170236fqgqebdgzghjqhbh.png" target=_blank><IMG src="http://www.oecr.com/data/attachment/portal/201607/25/170236fqgqebdgzghjqhbh.png"></A></SPAN></FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal align=center><FONT face=宋体><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"></SPAN> </FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal align=center><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">拥有近</SPAN><FONT face=宋体><SPAN lang=EN-US>70</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">条光束线的美国阿贡实验室同步辐射光源</SPAN></FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"> </SPAN></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">同步辐射光源的主体是电子储存环，</SPAN><FONT face=宋体><SPAN lang=EN-US>30</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">多年来已经历了三代的发展。第一代同步辐射光源的电子储存环是为高能物理实验而设计的，只是</SPAN><SPAN lang=EN-US>“</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">寄生</SPAN><SPAN lang=EN-US>”</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">地利用从偏转磁铁引出的同步辐射光，故又称</SPAN><SPAN lang=EN-US>“</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">兼用光源</SPAN><SPAN lang=EN-US>”</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">；第二代同步辐射光源的电子储存环则是专门为使用同步辐射光而设计的，主要从偏转磁铁引出同步辐射光；第三代同步辐射光源的电子储存环对电子束发射度和大量使用插入件进行了优化设计，使电子束发射度比第二代小得多，同步辐射光的亮度大大提高，如加入波荡器等插入件可引出高亮度、部分相干的准单色光。</SPAN> </FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><FONT face=宋体></FONT> </P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">同步辐射光具有频谱宽且连续可调（具有从远红外、可见光、紫外直到</SPAN><FONT face=宋体><SPAN lang=EN-US>X</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">射线范围内的连续光谱）、亮度高（第三代同步辐射光源的</SPAN><SPAN lang=EN-US>X</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">射线亮度是</SPAN><SPAN lang=EN-US>X</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">光机的上亿倍）、高准直度、高偏振性、高纯净性、窄脉冲、精确度高以及高稳定性、高通量、微束径、准相干等独特的性能。</SPAN></FONT></P><FONT face=宋体><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"> <P align=center><A href="data/attachment/portal/201607/25/170237ezzvyjp7kcffl566.png" target=_blank><IMG src="data/attachment/portal/201607/25/170237ezzvyjp7kcffl566.png"></A></P></SPAN></FONT> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal align=center><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设计有</SPAN><FONT face=宋体><SPAN lang=EN-US>30</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">个光引出口的英国</SPAN><SPAN lang=EN-US>DIAMOND</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">同步辐射光源</SPAN> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"> </SPAN></P> <P><SPAN style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN">世界上有近</SPAN><SPAN style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-bidi-language: AR-SA; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-fareast-font-family: 宋体" lang=EN-US>40</SPAN><SPAN style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN">台同步辐射光源正在运行，还有几十台在设计、建造中。我国的北京同步辐射装置（</SPAN><SPAN style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-bidi-language: AR-SA; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-fareast-font-family: 宋体" lang=EN-US>BSRF</SPAN><SPAN style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN">）、合肥中国科技大学同步辐射装置（</SPAN><SPAN style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-bidi-language: AR-SA; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-fareast-font-family: 宋体" lang=EN-US>NSRL</SPAN><SPAN style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN">）和台湾新竹的同步辐射装置（</SPAN><SPAN style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-bidi-language: AR-SA; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-fareast-font-family: 宋体" lang=EN-US>SRRC</SPAN><SPAN style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN">）分别属于第一、第二和第三代光源，正在建造的上海光源（</SPAN><SPAN style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-bidi-language: AR-SA; 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</dl><a name="comment_anchor_7433"></a> <dl id="comment_7433_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(7433, '4655');">引用</a> </span> <a href="http://club.oecr.com/space-uid-63594.html" class="xi2 xw1" c="1">leevagrant</a> <span class="xg1 xw0">2016-7-25 20:49</span> </dt> <dd>还是觉得这个网站最好，多少年了。</dd> </dl><a name="comment_anchor_7431"></a> <dl id="comment_7431_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(7431, '4655');">引用</a> </span> <a href="http://club.oecr.com/space-uid-17718.html" class="xi2 xw1" c="1">yugang</a> <span class="xg1 xw0">2016-7-25 19:49</span> </dt> <dd>科普文章挺好，真的。</dd> </dl><a name="comment_anchor_7430"></a> <dl id="comment_7430_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(7430, '4655');">引用</a> </span> <a href="http://club.oecr.com/space-uid-81131.html" class="xi2 xw1" c="1">S904091</a> <span class="xg1 xw0">2016-7-25 19:19</span> </dt> <dd>世界变化了，大家不爱帮助人了。</dd> </dl><a name="comment_anchor_7428"></a> <dl id="comment_7428_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(7428, '4655');">引用</a> </span> <a href="http://club.oecr.com/space-uid-60066.html" class="xi2 xw1" c="1">aofiluoke</a> <span class="xg1 xw0">2016-7-25 18:19</span> </dt> <dd>光电工程师社区 不错</dd> </dl></div> </div> <!--[diy=diycontentcomment]--><div id="diycontentcomment" class="area"></div><!--[/diy]--> </div> <div class="sd pph"> <div class="drag"> <!--[diy=diyrighttop]--><div id="diyrighttop" class="area"><div id="frameorJGGx" class="sy_ltdr frame move-span cl frame-1"><div class="frame-title title"><span class="titletext">社区成员推荐</span></div><div id="frameorJGGx_left" class="column frame-1-c"><div id="frameorJGGx_left_temp" class="move-span 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