<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">H. C. Liu</style></author><author><style face="normal" font="default" size="100%">Oleg V. Borisov</style></author><author><style face="normal" font="default" size="100%">Xianglei Mao</style></author><author><style face="normal" font="default" size="100%">Shuttleworth, S.</style></author><author><style face="normal" font="default" size="100%">Richard E. Russo</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Pb/U fractionation during Nd : YAG 213 nm and 266 nm laser ablation sampling with inductively coupled plasma mass spectrometry</style></title><secondary-title><style face="normal" font="default" size="100%">Applied Spectroscopy</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">213 nm</style></keyword><keyword><style  face="normal" font="default" size="100%">266 nm</style></keyword><keyword><style  face="normal" font="default" size="100%">ablation</style></keyword><keyword><style  face="normal" font="default" size="100%">beam</style></keyword><keyword><style  face="normal" font="default" size="100%">ca</style></keyword><keyword><style  face="normal" font="default" size="100%">correlation</style></keyword><keyword><style  face="normal" font="default" size="100%">crater</style></keyword><keyword><style  face="normal" font="default" size="100%">crater geometry</style></keyword><keyword><style  face="normal" font="default" size="100%">deposition</style></keyword><keyword><style  face="normal" font="default" size="100%">depth</style></keyword><keyword><style  face="normal" font="default" size="100%">e</style></keyword><keyword><style  face="normal" font="default" size="100%">element</style></keyword><keyword><style  face="normal" font="default" size="100%">elemental fractionation</style></keyword><keyword><style  face="normal" font="default" size="100%">elements</style></keyword><keyword><style  face="normal" font="default" size="100%">fractionation</style></keyword><keyword><style  face="normal" font="default" size="100%">geochronology</style></keyword><keyword><style  face="normal" font="default" size="100%">glass</style></keyword><keyword><style  face="normal" font="default" size="100%">glass samples</style></keyword><keyword><style  face="normal" font="default" size="100%">glasses</style></keyword><keyword><style  face="normal" font="default" size="100%">icp-ms</style></keyword><keyword><style  face="normal" font="default" size="100%">inductively coupled plasma</style></keyword><keyword><style  face="normal" font="default" size="100%">inductively coupled plasma mass spectrometry</style></keyword><keyword><style  face="normal" font="default" size="100%">inductively-coupled-plasma</style></keyword><keyword><style  face="normal" font="default" size="100%">irradiance</style></keyword><keyword><style  face="normal" font="default" size="100%">lam-icp-ms</style></keyword><keyword><style  face="normal" font="default" size="100%">laser</style></keyword><keyword><style  face="normal" font="default" size="100%">laser ablation</style></keyword><keyword><style  face="normal" font="default" size="100%">laser ablation sampling</style></keyword><keyword><style  face="normal" font="default" size="100%">laser beam</style></keyword><keyword><style  face="normal" font="default" size="100%">laser wavelength</style></keyword><keyword><style  face="normal" font="default" size="100%">laser-ablation</style></keyword><keyword><style  face="normal" font="default" size="100%">laser-wavelength</style></keyword><keyword><style  face="normal" font="default" size="100%">lasers</style></keyword><keyword><style  face="normal" font="default" size="100%">mass</style></keyword><keyword><style  face="normal" font="default" size="100%">mass spectrometer</style></keyword><keyword><style  face="normal" font="default" size="100%">mass spectrometry</style></keyword><keyword><style  face="normal" font="default" size="100%">mass-spectrometer</style></keyword><keyword><style  face="normal" font="default" size="100%">mass-spectrometry</style></keyword><keyword><style  face="normal" font="default" size="100%">measurement</style></keyword><keyword><style  face="normal" font="default" size="100%">measurements</style></keyword><keyword><style  face="normal" font="default" size="100%">melting</style></keyword><keyword><style  face="normal" font="default" size="100%">microanalysis</style></keyword><keyword><style  face="normal" font="default" size="100%">nd</style></keyword><keyword><style  face="normal" font="default" size="100%">nd:yag</style></keyword><keyword><style  face="normal" font="default" size="100%">nd:yag laser</style></keyword><keyword><style  face="normal" font="default" size="100%">nist</style></keyword><keyword><style  face="normal" font="default" size="100%">nm</style></keyword><keyword><style  face="normal" font="default" size="100%">oxide</style></keyword><keyword><style  face="normal" font="default" size="100%">pb/u</style></keyword><keyword><style  face="normal" font="default" size="100%">plasma</style></keyword><keyword><style  face="normal" font="default" size="100%">plasma mass spectrometry</style></keyword><keyword><style  face="normal" font="default" size="100%">plasma-mass-spectrometry</style></keyword><keyword><style  face="normal" font="default" size="100%">ratio</style></keyword><keyword><style  face="normal" font="default" size="100%">ratios</style></keyword><keyword><style  face="normal" font="default" size="100%">sample</style></keyword><keyword><style  face="normal" font="default" size="100%">sampling</style></keyword><keyword><style  face="normal" font="default" size="100%">single</style></keyword><keyword><style  face="normal" font="default" size="100%">spectrometer</style></keyword><keyword><style  face="normal" font="default" size="100%">spectrometry</style></keyword><keyword><style  face="normal" font="default" size="100%">surface</style></keyword><keyword><style  face="normal" font="default" size="100%">temperature</style></keyword><keyword><style  face="normal" font="default" size="100%">temperatures</style></keyword><keyword><style  face="normal" font="default" size="100%">time</style></keyword><keyword><style  face="normal" font="default" size="100%">usa</style></keyword><keyword><style  face="normal" font="default" size="100%">vaporization</style></keyword><keyword><style  face="normal" font="default" size="100%">wavelength</style></keyword><keyword><style  face="normal" font="default" size="100%">wavelengths</style></keyword><keyword><style  face="normal" font="default" size="100%">yag</style></keyword><keyword><style  face="normal" font="default" size="100%">zircon</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2000</style></year></dates><number><style face="normal" font="default" size="100%">10</style></number><volume><style face="normal" font="default" size="100%">54</style></volume><pages><style face="normal" font="default" size="100%">1435-1442</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Elemental fractionation during laser ablation sampling was investigated by measuring Pb/U ratios in NIST 610 synthetic glass. Two Nd:YAG lasers with wavelengths of 213 and 266 nm were used to ablate the sample into an inductively coupled plasma mass spectrometer. Pb/U fractionation was observed to be similar for both laser wavelengths, and dependent on the irradiance. For representative Pb/U measurements, the necessary laser irradiance should be &gt;0.6 GW/cm(2). However, if the laser beam is initially focused close to the sample surface, fractionation increases and is influenced by the formation of a crater during repetitive pulsing at a single sample location. As the ratio of crater depth to radius increases, plasma sampling and/or an effective irradiance decrease could cause additional fractionation. A good correlation was found between the fractionation of 14 elements in NIST 610 glass and the logarithms of their oxide melting temperatures</style></abstract><accession-num><style face="normal" font="default" size="100%">125</style></accession-num><notes><style face="normal" font="default" size="100%">LBNL-46626 NOT IN FILE</style></notes><custom2><style face="normal" font="default" size="100%">LBNL-46626</style></custom2><auth-address><style face="normal" font="default" size="100%">Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China</style></auth-address><label><style face="normal" font="default" size="100%">Laser</style></label></record></records></xml>