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　更新時(shí)間：2022-08-23　點(diǎn)擊量：<span id="Click">1178</span> </div> <div id="d3dd55d" class="n_con" id="c_detail_wrap"> <div>　　<strong><a href="http://m.m77fruit.com/Products-37118450.html" target="_blank">手持合金光譜分析儀</a></strong>是基于X射線(xiàn)理論而誕生的，它主要用于航天、鋼鐵、石化、電力、制藥等領(lǐng)域金屬材料中元素成份的現場(chǎng)測定。是伴隨世界經(jīng)濟崛起的工業(yè)和其他制造領(lǐng)域不可少的快速成份鑒定工具。</div><div>　　手持合金光譜分析儀是一種XRF光譜分析技術(shù)，X光管產(chǎn)生的X射線(xiàn)打到被測樣品時(shí)可以擊出原子的內層電子，出現殼層空穴，當外層電子從高軌道躍遷到低能軌道來(lái)填充軌道空穴時(shí)，就會(huì )產(chǎn)生特征X射線(xiàn)。X射線(xiàn)探測器將樣品元素的X射線(xiàn)的特征譜線(xiàn)的光信號轉換成易于測量的電信號來(lái)得到待測元素的特征信息。</div><div>　　每一個(gè)原子都有自己固定數量的電子(負電微粒)運行在核子周?chē)能壍郎?。而且其電子的數量等同于核子中的質(zhì)子(正電微粒)數量。從元素周期表中的原子數我們則可以得知質(zhì)子的數目。每一個(gè)原子數都對應固定的元素名稱(chēng)，例如鐵，元素名是Fe，原子數是26。能量色散X螢光與波長(cháng)色散X螢光光譜分析技術(shù)特別研究與應用了最里層三個(gè)電子軌道即K，L，M上的活動(dòng)情況，其中K軌道接近核子，每個(gè)電子軌道則對應某元素一個(gè)個(gè)特定的能量層。</div><div>　　手持合金光譜分析儀在XRF分析法中，從X光發(fā)射管里放射出來(lái)的高能初級射線(xiàn)光子會(huì )撞擊樣本元素。這些初級光子含有足夠的能量可以將里層即K層或L層的電子撞擊脫軌。這時(shí)，原子變成了不穩定的離子。由于電子本能會(huì )尋求穩定，外層L層或M層的電子會(huì )進(jìn)入彌補內層的空間。在這些電子從外層進(jìn)入內層的過(guò)程中，它們會(huì )釋放出能量，我們稱(chēng)之為二次X射線(xiàn)光子。</div><div>　　而整個(gè)過(guò)程則稱(chēng)為螢光輻射。每種元素的二次射線(xiàn)都各有特征。而X射線(xiàn)光子螢光輻射產(chǎn)生的能量是由電子轉換過(guò)程中內層和外層之間的能量差決定的。例如，鐵原子Fe的Kα能量大約是6.4千電子伏。特定元素在一定時(shí)間內所放射出來(lái)的X射線(xiàn)的數量或者密度，能夠用來(lái)衡量這種元素的數量。典型的XRF能量分布光譜顯示了不同能量時(shí)光子密度的分布情況。</div> </div> </div> <div id="ddd5ddd" class="cl"></div> <div id="d5dddd3" class="ye">上一條：<a href="/News-1430720.html">一文帶你了解水質(zhì)等比例采樣器的原理</a><br />下一條：沒(méi)有了</div> </div> </div> </div> <div id="3d57dd5" class="clearfix"></div> <div class="d5dddd7" id="clear"></div>  <footer class="footer"> <div id="ddd5ddd" class="wrapper w1200"> <div id="d5ddddd" class="ft-inner"> <div id="dd3dddd" class="leftCon"> <div id="dddddd5" class="ft-info"> <div id="d3dd53d" class="ft-logo"><img src="/Skins/332979/images/footlogo.png" alt="陜西伊唯普凈環(huán)?？萍加邢薰?></div> <div id="ddd537d" class="ft-tel"> <span>郵箱</span> <p>yiweipujing@163.com</p> </div> <div 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