宝石中元素检测方案(激光诱导击穿)

TMLIBS-6&LIBS-8TMLASER SPECTROSCOPY SOLUTION S Integrated LIBS Modules Integrated modules for configuring a customised LIBS systemCompatible with a range of pulsed lasers and UV-Vis-NIR spectrometers LIBS-6 module (left) and fitted to one of our modular SC-2L sample chambers (right). Laser head and adaptor platform not shown Essentially“LIBS system building blocks"， the LIBS-6 and LIBS-8 modules may be used together with a variety of Q-switched Nd：YAG lasers and optical spectrometers to form customised LIBS systems. This allows the user to assemble aLIBS system that best suits the requirements of their specific application or experimental research. The LIBS modulesremove the need to design and construct your own laser focussing optics and plasma light collection optics by combiningthese features into a compact， integrated and easy to use device. An optional integrated video camera is also available. Example configurations - Left： LIBS-6 module coupled to a Quantel Q-smart laser and SC-2XL manual sample chamber Centre： LIBS-6 module coupled to a Litron Nano LG 300-10 laser in an open beam configuration Right： LIBS-8 module coupled to a Litron Nano SG 150-10 laser， XYZ-750 motorized sample chamber and SpectroModule-8 Features Allows easy conversion of a standard Q-switched Nd：YAG laser into a LIBS device (requires： adaptor platform to attach LIBSmodule to laser head， suitable spectrometer(s)， fibre-optic cables and computer) Available in 6-channel (LIBS-6) or 8-channel (LIBS-8) versions High-efficiency plasma light collection optics - LIBS-6： 1 DUV， 2 UV-Vis， 3 Vis-NIR channels. LIBS-8： 1 DUV， 3 UV-Vis， 4 Vis-NIR channels ● May be supplied with laser beam expander optics configured for all harmonic wavelengths of Nd：YAG lasers (contact us foravailable options). Integral laser beam expander with adjustable focus (theoretical minimum spot size typically 30 -100 microns depending onlaser used) Adjustable nozzle aperture- provides a convenient means of setting the distance to the sample. May be used in 'open beam'configuration (Class 4) or with fully-interlocked (Class 1) modular sample chambers Fully compatible with our range of modular sample chambers Working distances (nominal distance to sample)：~100 mm. Custom versions also available. Gas purge facility for supplying inert gas (argon， helium， nitrogen，air) to sample surface ● Optional imaging camera kit (IMG-HR) for viewing sample surface. Kit includes high resolution colour camera， dimmablehigh-brightness white LEDs for illuminating sample and a USB video converter for connection to a PC. LIBS-6TM， LIBS-8TM and LIBSoftTM are trade marks of Applied Photonics Ltd General Specifications Technology： Laser-Induced Breakdown Spectroscopy Laser source：Q-switched Nd：YAG (specify make， model and configuration of laser when ordering LIBS module)Spectrometer：LIBS modules are compatible with various fibre-optic coupled spectrometers (contact us for advice)Plasma light collection：Six (or eight) collection lenses arranged in a circular array and covering wavelength range ~182- 1016 nmFibre-optic interface：Six (or eight) SMA 905 connectors located at rear of optics holder (see below). Use multiple single-core fibre-optic cables formultiple spectrometers or 6-into-1 (or 8-into-1) fibre optic bundle for single spectrometer. Contact us for adviceLaser beam expander：Adjustable focus (approx. +/-7 mm). Minimum spot size typically 30 - 100 microns depending on laser. Beam expanderdesigned to suit specific Nd：YAG laser and operating wavelengthDimensions：Approx. 265 (L)x 122(W) x122 (H) mm， weight： ~2 kgSample interface："Open beam" path to sample or via use of one of our modular sample chambersOptional sample chambers：Compatible with our range of modular sample chambers. See our website for further detailsOptional imaging camera：LIBS-6 and LIBS-8 modules are fully compatible with our IMG-HR imaging kitOptional software：Data acquisition， processing and recording via user-friendly LIBSoft"software (please contact us for details on which lasersand spectrometers are supported by LIBSoft). NB. LIBSoft is not necessary for operation of LIBS modulesProduct classification：Class 4 when used without modular sample chamber. Class 1 laser product when used with modular sample chambers andinstructions given in User's Manual are adhered to Example configurations Typical system configuration： LIBS-8module， Litron Nano SG 150-10 laser head， LPU 350 laser power supply， AP-Nano S adaptor platform(for mounting laser head to LIBS-8 module)， XYZ-750 modular sample chamber， SpectroModule-8 eight channel LIBS spectrometer 3.5E+06F 3.0E+06- 2.5E+06 2.0E+06 1.5E+06 1.0E+06 5.0E+05 0 200 400 600 800 1000 Example spectrum of high-purity zinc with argon purge gas (50-shot accumulation， 10 ps delay， 50 mJ laser pulse energy) www.appliedphotonics.co.uk @ All rights reservedSpecifications subject to change without noticeApplied Photonics LimitedUnit Carleton Business ParkSkipton North Yorkshire BDE United KingdomTel+() Fax +() www.appliedphotonics.co.ukmail@appliedphotonics.co.uk LIBS于珠宝鉴定行业的应用及APL解决方案Be扩散是一种特殊的处理手段，通常是在高温热处理宝石的时候加入一定量氧化铍,可以形成非常厚的颜色层(甚至整体改色)。处理过程中，氧化铍只起到了活化剂的作用，并不作为致色离子直接参与改色。宝石Be扩散经过Be扩散处理的蓝宝石与名贵的Padparadscha宝石外观相似Be扩散会按在宝石表面形成一种铍铝氧化物。 所以通过对引入元素或铍元素的测定，LIBS技术可以轻松判断出宝石是否经过扩散处理。左图:经过Be处理后蓝宝石与未经过处理的天然蓝宝石LIBS光谱对比其在313nm附近的Be双峰清晰可见APL宝石测量LIBS系统APL用于宝石学应用的模块化LIBS系统是一款适用于宝石分析的高度通用设备。该设备光谱范围可扩展至180-1030nm,可应用于但并不局限于Be元素的检测。系统使用266nm紫外激光器,很大程度将损伤控制在宝石表面。通过两套高分辨率彩色相机,可以在显示屏上实时监测测量点的顶面和侧面图像，便于控制激光在宝石表面上的聚焦点，减小损伤。Camera 1 capturCamera 2 capture典型用户产品介绍LIBS GEM SYSTEM简介：用于宝石学应用的模块化LIBS系统提供了一种适用于宝石分析的高度通用的产品，主要用于但不限于蓝宝石中铍的检测。使用紫外激光可大限度地减少与样品表面的相互作用。该系统具有两个高分辨率成像摄像机，允许在监视器上查看特写彩色图像；一个摄像头查看样品表面（俯视图），另一个摄像头从侧面查看样品（即与激光束轴成直角）。两个摄像头的组合有助于精确控制激光束在石头表面的聚焦，并将样品表面上的损伤降低。Be的检测只需要一个光谱仪，但如果其他应用需要，系统可配备8个光谱仪通道。我们的SC-2L手动样品室建议用于宝石分析，但该系统也可选用更多样品室选项。特点：模块化设计，适用于宝石学和其他需要使用266 nm激光的应用激光器：高达20 mJ @ 266 nm两个高分辨率成像摄像机，允许在监视器上查看特写彩色图像；一个摄像头查看样品表面（俯视图），另一个摄像头从侧面查看样品（侧视图）。软件十字线标记有助于样品相对于激光焦点的精确定位一次激光发射就足以获得分析信息可对样品表面进行惰性气体吹扫（外接惰性气源——氩气、氮气、氦气）APL公司介绍Applied Photonics Ltd（APL）是一家历史悠久，专门从事激光诱导击穿光谱（LIBS）产品研发及生产的公司。APL公司自1998年成立以来，一直为客户提供全系列的LIBS产品，包括台式、便携式、光纤式、独立式和定制式设计的LIBS系统。APL还为客户提供专业的技术服务，包括产品研发、可行性研究、基于LIBS的远程材料表征服务以及完整的定制项目。APL与多个商业部门合作，并在世界范围内建立了业务，在核工业和国防工业的合作研发方面具有强大的背景，并为众多蓝筹股公司和实验室提供系统。