{"id":144438,"date":"2018-07-07T14:00:55","date_gmt":"2018-07-07T06:00:55","guid":{"rendered":"\/\/m.iemloyee.com\/?p=144438"},"modified":"2018-07-06T16:55:35","modified_gmt":"2018-07-06T08:55:35","slug":"%e5%8a%b3%e4%bc%a6%e6%96%af%e5%88%a9%e5%bc%97%e8%8e%ab%e5%b0%94%e5%9b%bd%e5%ae%b6%e5%ae%9e%e9%aa%8c%e5%ae%a4prl%ef%bc%9a%e7%a1%acx%e5%b0%84%e7%ba%bf%e8%a7%82%e6%b5%8b%e5%8d%95%e6%99%b6%e7%a1%85","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=144438","title":{"rendered":"\u52b3\u4f26\u65af\u5229\u5f17\u83ab\u5c14\u56fd\u5bb6\u5b9e\u9a8c\u5ba4PRL\uff1a\u786cX\u5c04\u7ebf\u89c2\u6d4b\u5355\u6676\u7845\u975e\u70ed\u7194\u7684\u5ef6\u8fdf\u8fc7\u7a0b"},"content":{"rendered":"

\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n

\u00a0<\/strong>\u6676\u4f53\u4e2d\u539f\u5b50\u5468\u671f\u6027\u7684\u8d85\u5feb\u635f\u5931\u73b0\u8c61\u4f1a\u4f34\u968f\u7740\u9ad8\u80fd\u5149\u5b50\u8109\u51b2\u7684\u5438\u6536\u800c\u4ea7\u751f\u3002\u6b64\u65f6\uff0c\u9ad8\u4e8e\u67d0\u4e00\u9608\u503c\u6e29\u5ea6\u7684\u7535\u5b50\u70ed\u5316\u5bfc\u81f4\u5927\u91cf\u7684\u952e\u5408\u72b6\u6001\u88ab\u8017\u5c3d\u540c\u65f6\u53cd\u952e\u5408\u72b6\u6001\u88ab\u586b\u5145\uff0c\u7136\u540e\uff0c\u79bb\u5b50\u7684\u9759\u7535\u52bf\u53d1\u751f\u663e\u8457\u53d8\u5316\uff0c\u5bfc\u81f4\u4ece\u5176\u5e73\u8861\u4f4d\u7f6e\u53d1\u751f\u4e86\u60ef\u6027\u4f4d\u79fb\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5149\u5438\u6536\u5c06\u7531\u6838\u7ea7\u7535\u5b50\u4e3b\u5bfc\uff0c\u4ea7\u751f\u5feb\u5149\u7535\u5b50\u3002\u7136\u800c\uff0c\u5728\u9608\u503c\u6e29\u5ea6\u4e4b\u4e0a\uff0c\u5c06\u901a\u8fc7\u4e8c\u6b21\u7535\u5b50\u7ea7\u8054\u4fdd\u6301\u7535\u5b50\u5e73\u8861\u8fc7\u7a0b\uff0c\u65f6\u95f4\u5c3a\u5ea6\u9ad8\u8fbe60 fs\uff0c\u63a8\u8fdf\u975e\u70ed\u878d\u7684\u53d1\u751f\u3002\u8be5\u5de5\u4f5c\u5373\u662f\u6d4b\u91cf\u8fd9\u79cd\u5ef6\u8fdf\u8fc7\u7a0b\u3002<\/p>\n

\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u00a0<\/strong>\u8fd1\u65e5\uff0c\u7f8e\u56fd\u52b3\u4f26\u65af\u5229\u5f17\u83ab\u5c14\u56fd\u5bb6\u5b9e\u9a8c\u5ba4<\/strong>T. Pardini<\/strong>\u7b49\u7814\u7a76\u4eba\u5458\u901a\u8fc7\u5b9e\u65bdX\u5c04\u7ebf\u6cf5-X\u5c04\u7ebf\u63a2\u9488\u65b9\u6848\u6765\u76d1\u6d4b\u5355\u6676\u7845\u4e2d\u975e\u70ed\u878d\u7684\u5f00\u7aef\u3002\u901a\u8fc7\u4f7f\u7528\u7531Linac\u76f8\u5e72\u5149\u6e90\uff08SLAC\uff09\u63d0\u4f9b\u7684\u8d85\u77ed\u8109\u51b2\u548c\u9488\u5bf9\u786cx\u5c04\u7ebf\u7684\u5b9a\u5411\u5206\u88c2\u548c\u5ef6\u8fdf\u7ebf\uff0c\u4ed6\u4eec\u5b9e\u73b0\u4e86\u68c0\u6d4b\u8f6c\u6362\u5f00\u7aef\u7684\u77ac\u65f6\u5206\u8fa8\u7387\u3002\u4ed6\u4eec\u7684\u6570\u636e\u663e\u793a\uff0c\u4ece\u5149\u5438\u6536\u5230150\u00b140fs\u4e4b\u95f4\u7684\u5e76\u672a\u635f\u5931\u957f\u7a0b\u6709\u5e8f\u5ea6\uff0c\u5e76\u8ba4\u4e3a\u8fd9\u662f\u7535\u5b50\u4f53\u7cfb\u8fbe\u5230\u6216\u8d85\u8fc7\u4e34\u754c\u975e\u70ed\u7194\u6e29\u5ea6\u6240\u9700\u7684\u65f6\u95f4\u3002\u4e00\u65e6\u8fbe\u5230\u8fd9\u79cd\u5e73\u8861\uff0c\u957f\u7a0b\u539f\u5b50\u6392\u5217\u7684\u635f\u5931\u4f1a\u4ee5\u60ef\u6027\u8fdb\u884c\uff0c\u5e76\u5728\u5149\u5438\u6536\u7684315\u00b140 fs\u5185\u5b8c\u6210\u3002\u8be5\u7814\u7a76\u53d1\u8868\u4e8ePhysical Review Letters<\/strong>\uff0c\u9898\u4e3a\u201cDelayed Onset of Nonthermal Melting in Single-Crystal Silicon Pumped with Hard X Rays<\/strong>\u201d<\/strong>\u3002<\/p>\n

\u00a0<\/strong>\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n

\u00a0<\/strong>\u56fe<\/strong>1. <\/strong>\u5b9e\u9a8c\u88c5\u7f6e\u7684\u793a\u610f\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

\u6765\u81eaLCLS\u768425 fs FWHM\u8109\u51b2\u88abMEL-X\u5206\u5206\u6210\u6cf5\u6d66\u548c\u63a2\u6d4b\u5149\u675f\uff0cMEL-X\u5b89\u88c5\u5728\u805a\u7126\u5149\u5b66\u5668\u4ef6\u4e0b\u6e38\u7ea64 m\u5904\u548c\u6837\u54c1\u5e73\u9762\u4e0a\u6e38\u7ea64 m\u5904\u3002\u5728\u50cf\u7d20\u9635\u5217\u68c0\u6d4b\u5668\u4e0a\uff0cSi(333)\u5e03\u62c9\u683c\u53cd\u5c04\u901a\u8fc7\u8fd1\u540e\u6563\u5c04\u51e0\u4f55\u8fdb\u884c\u6d4b\u91cf\u3002M2\u548cM3 MEL-X\u53cd\u5c04\u955c\u76f8\u5bf9\u4e8e\u5149\u8f74\u7684\u63d2\u5165\u6df1\u5ea6\u8bef\u5dee\u5982\u56fe\u6240\u793a\uff0c\u4ee3\u8868\u4e86\u6cf5\u6d66\u63a2\u5934\u5ef6\u8fdf\u4e0d\u786e\u5b9a\u5ea6\u6700\u91cd\u8981\u7684\u6765\u6e90\u3002<\/p>\n

\u56fe<\/strong>2.<\/strong>\u6837\u54c1\u5904\u6cf5\uff08<\/strong>a<\/strong>\uff09\u548c\u63a2\u5934\uff08<\/strong>b<\/strong>\uff09\u5149\u675f\u7684\u6a21\u62df\u5f3a\u5ea6\u5206\u5e03<\/strong><\/p>\n

\"\"<\/p>\n

\u5728\u6837\u54c1\u4f4d\u7f6e\u6a21\u62df\u6cf5(a)\u548c\u63a2\u9488(b)\u7684\u5f3a\u5ea6\u5206\u5e03\u3002<\/span><\/span><\/p>\n

\uff08a\uff09\u4e2d\u7ea2\u7ebf\u8868\u793a1.5 eV\/atom\u7684\u8f6e\u5ed3\uff0c\u6cf5\u6d66\u5f3a\u5ea6\u768465\uff05\u5305\u542b\u5728\u8be5\u8f6e\u5ed3\u5185\u3002<\/p>\n

\uff08b\uff09\u4e2d\u63a2\u9488\u5149\u675f\u7684\u5f3a\u5ea6\u88ab\u7f29\u653e\u4e860.4\u500d\uff0c\u4ee5\u89e3\u91caMEL-X\u6cbf\u7740\u63a2\u6d4b\u5149\u675f\u8def\u5f84\u7684\u56db\u6b21\u53cd\u5c04\u7684\u53cd\u5c04\u7387\u3002<\/p>\n

\u56fe<\/strong>3.<\/strong> Brag<\/strong>\u4fe1\u53f7\u5728\u63a2\u6d4b\u5668\u5904\u7684\u6bd4\u503c\uff08<\/strong>I \/ I0<\/sub><\/strong>\uff09\u4e0e\u5ef6\u8fdf\u65f6\u95f4\u7684\u51fd\u6570\u5173\u7cfb<\/strong><\/p>\n

\"\"<\/p>\n

\u53f3\u4fa7y\u8f74\u663e\u793a\u63a2\u5934\u53cd\u5c04\u7387\u3002\u5047\u8bbe\u7684\u60ef\u6027\u6a21\u578b\u4e2d\uff0c\u53cd\u5c04\u7387\u968f\u65f6\u95f4\u53d8\u5316\u7684\u7406\u8bba\u635f\u5931\u7528\u5b9e\u5fc3\u7ea2\u7ebf\u8868\u793a\uff0c\u65f6\u95f4\u4e0d\u786e\u5b9a\u6027\u4ee5\u865a\u7ebf\u8868\u793a\u3002<\/p>\n

\u00a0<\/strong>\u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n

\u8be5\u5de5\u4f5c\u7814\u7a76\u4e865.95 keV\u7684X\u5c04\u7ebf\u8109\u51b2\u6cf5\u6d66\u4e0b\u5355\u6676\u7845\u7684\u975e\u70ed\u7194\u5316\u3002\u7814\u7a76\u6570\u636e\u8868\u660e\uff0c\u5bf9\u4e8e\u7528\u786cx\u5c04\u7ebf\u6cf5\u6d66\u7684\u7845\uff0c\u7535\u5b50\u5728\u7b49\u4e8e\u6216\u9ad8\u4e8e1.5 eV\/atom\u7684\u9608\u503c\u6e29\u5ea6\u70ed\u5316\u65f6\u81f3\u5c11\u9700\u8981110 fs\u3002\u4ed6\u4eec\u8ba4\u4e3a\uff0c\u5feb\u901f\u70ed\u5316\u5149\u7535\u5b50\u6240\u9700\u7684\u51e0\u767e\u6b21\u78b0\u649e\u5bfc\u81f4\u4e86\u8fd9\u4e2a\u76f8\u5f53\u957f\u7684\u65f6\u95f4\u5c3a\u5ea6\u3002\u4e00\u65e6\u5f00\u59cb\u8fc7\u6e21\uff0c\u79bb\u5b50\u4f1a\u4ece\u5b83\u4eec\u7684\u5e73\u8861\u4f4d\u7f6e\u53d1\u751f\u60ef\u6027\u79fb\u4f4d\uff0c\u5728315\u00b140 fs\u5185\u5c31\u4e0d\u5b58\u5728\u957f\u7a0b\u6709\u5e8f\uff0c\u540c\u65f6\uff0c\u63a2\u9488\u53cd\u5c04\u7387\u7684\u7f3a\u5931\u8bc1\u660e\u4e86\u8fd9\u4e00\u70b9\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1aDelayed Onset of Nonthermal Melting in Single-Crystal Silicon Pumped with Hard X Rays<\/a> <\/strong>(Physical Review Letters 2018, DOI: 10.1103\/PhysRevLett.120.265701)<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u8ba1\u7b97\u6750\u6599\u7ec4Annay\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\u3002<\/p>\n

\u6750\u6599\u725b\u7f51\u4e13\u6ce8\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u53ca\u884c\u4e1a\u8fdb\u5c55\uff0c\u8fd9\u91cc\u6c47\u96c6\u4e86\u5404\u5927\u9ad8\u6821\u7855\u535a\u751f\u3001\u4e00\u7ebf\u79d1\u7814\u4eba\u5458\u4ee5\u53ca\u884c\u4e1a\u4ece\u4e1a\u8005\uff0c\u5982\u679c\u60a8\u5bf9\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u8fdb\u5c55\uff0c\u89e3\u8bfb\u9ad8\u6c34\u5e73\u6587\u7ae0\u6216\u662f\u8bc4\u8ff0\u884c\u4e1a\u6709\u5174\u8da3\uff0c\u70b9\u6211\u52a0\u5165\u7f16\u8f91\u90e8\u5927\u5bb6\u5ead<\/a>\u3002<\/p>\n

\u6b22\u8fce\u5927\u5bb6\u5230\u6750\u6599\u4eba\u5ba3\u4f20\u79d1\u6280\u6210\u679c\u5e76\u5bf9\u6587\u732e\u8fdb\u884c\u6df1\u5165\u89e3\u8bfb\uff0c\u6295\u7a3f\u90ae\u7bb1tougao[at]cailiaoren.com<\/p>\n

\u6295\u7a3f\u4ee5\u53ca\u5185\u5bb9\u5408\u4f5c\u53ef\u52a0\u7f16\u8f91\u5fae\u4fe1\uff1acailiaokefu<\/strong>\uff0c\u6211\u4eec\u4f1a\u9080\u8bf7\u5404\u4f4d\u8001\u5e08\u52a0\u5165\u4e13\u5bb6\u7fa4\u3002<\/strong><\/p>\n

\u6750\u6599\u6d4b\u8bd5\u3001\u6570\u636e\u5206\u6790\uff0c\u4e0a\u6d4b\u8bd5\u8c37<\/a>\uff01<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

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