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taking a break</image:caption></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/07/posmol20192.jpg</image:loc><image:title>POSMOL20192</image:title><image:caption>Cliff and David</image:caption></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/07/posmol20191.jpg</image:loc><image:title>POSMOL20191</image:title></image:image><lastmod>2023-09-19T18:47:28+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2019/09/17/slopos-15/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/09/p1150929.jpg</image:loc><image:title>P1150929</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/09/p1150910.jpg</image:loc><image:title>P1150910</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/09/p1150908.jpg</image:loc><image:title>P1150908</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/09/p1150738.jpg</image:loc><image:title>P1150738</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/09/p1150321.jpg</image:loc><image:title>P1150321</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/09/p1150016.jpg</image:loc><image:title>P1150016</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/09/p1140851.jpg</image:loc><image:title>P1140851</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/09/group.jpg</image:loc><image:title>group</image:title></image:image><lastmod>2023-09-19T18:46:11+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2017/03/02/eberhard-widman-in-beam-hyperfine-spectroscopy-of-antihydrogen/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/03/20170222_160853.jpg</image:loc><image:title>20170222_160853</image:title></image:image><lastmod>2023-09-19T18:45:17+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2015/03/31/system-modification-for-rydberg-ps-imaging/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2015/03/n11dfrac1.png</image:loc><image:title>n11Dfrac</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2015/03/newchamber.png</image:loc><image:title>newchamber</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2015/03/newchamber.png</image:loc><image:title>newchamber</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2015/03/n11dfrac.png</image:loc><image:title>n11Dfrac</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2015/03/rydbforce1.png</image:loc><image:title>RydbForce</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2015/03/rydbforce.png</image:loc><image:title>RydbForce</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2015/03/rydbforce.jpg</image:loc><image:title>RydbForce</image:title></image:image><lastmod>2023-09-19T18:43:00+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2023/08/26/damop-2023/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2023/08/20230605_190755-1.jpg</image:loc><image:title>20230605_190755-1</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2023/08/20230604_191826.jpg</image:loc><image:title>20230604_191826</image:title></image:image><lastmod>2023-08-30T10:53:20+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2022/07/19/international-conference-on-precision-physics-of-simple-atomic-systems/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2022/07/psas_40-2-1536x1152-1.jpg</image:loc><image:caption>Sam Reeder presenting his poster at PSAS 2022</image:caption></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2022/07/psas_20-2-1536x1152-1.jpg</image:loc><image:caption>David presenting his talk at PSAS 2022</image:caption></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2022/07/psas_08_crop16x9-4-1536x864-1.jpg</image:loc><image:caption>The PSAS 2022 group photo</image:caption></image:image><lastmod>2023-05-20T13:29:38+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2021/07/25/a-note-on-unexpectedly-useful-transferable-skills-for-experimental-physicists/</loc><lastmod>2021-07-25T16:23:31+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2020/08/06/precision-microwave-spectroscopy-of-ps/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2020/07/microwavehistory_nu0.png</image:loc><image:title>microwavehistory_nu0</image:title><image:caption>Figure 5: Comparison with theory and previous experiments.</image:caption></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2020/07/nu0extrapolationblog.png</image:loc><image:title>nu0ExtrapolationBlog</image:title><image:caption>Figure 4: Zeeman measurement of resonance frequency vs magnetic field</image:caption></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2020/07/23p0lineshapeblog.png</image:loc><image:title>23P0LineshapeBlog</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2020/07/blogschematic.png</image:loc><image:title>BlogSchematic</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2020/07/interference.png</image:loc><image:title>Interference</image:title></image:image><lastmod>2020-09-30T10:51:10+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2020/01/14/shifts-of-positronium-energy-levels-in-mgo/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2020/01/offset2blog.png</image:loc><image:title>offset2blog</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2020/01/energylevelsblog.png</image:loc><image:title>EnergyLevelsblog</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2020/01/mgon112ndblog.png</image:loc><image:title>MgOn=112ndblog</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2020/01/trplgauss3blog.png</image:loc><image:title>TRPLGauss3blog</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2020/01/targetschematicblog.png</image:loc><image:title>targetschematicblog</image:title></image:image><lastmod>2020-01-17T15:58:54+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2019/09/26/trapping-long-lived-rydberg-states-of-nitric-oxide/</loc><lastmod>2019-11-06T15:37:28+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2019/06/12/towards-trapping-of-rydberg-ps/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/03/lfsvshfs2.png</image:loc><image:title>LFSvsHFS2</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/03/guideoff.png</image:loc><image:title>guideoff</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/03/schematic2ndversion.png</image:loc><image:title>Schematic(2ndVersion)</image:title></image:image><lastmod>2019-07-23T18:29:15+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2019/03/29/in-pursuit-of-cold-ps/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/03/kefit2-1.png</image:loc><image:title>KEfit2</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/03/kefit2.png</image:loc><image:title>KEfit2</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/03/mgoblog2.png</image:loc><image:title>MgOblog2</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2019/03/mgoblog.png</image:loc><image:title>MgOblog</image:title></image:image><lastmod>2019-03-29T17:39:47+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2017/04/29/positronium-rydberg-manipulation/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/04/dsc_3183.jpg</image:loc><image:title>DSC_3183</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/04/ionisedguided.png</image:loc><image:title>ionisedguided</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/04/guidingefficiency3d.png</image:loc><image:title>guidingefficiency3D</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/04/guidingefficiency2d.png</image:loc><image:title>guidingefficiency2D</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/04/differentntraj.png</image:loc><image:title>differentntraj</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/04/webfig.png</image:loc><image:title>webfig</image:title></image:image><lastmod>2019-03-17T13:49:32+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2017/07/07/rydberg-positronium-electron-scattering/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/07/histbksublyso13nai.png</image:loc><image:title>histbksubLYSO13NaI</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/06/histbksubmcp1.png</image:loc><image:title>histbksubMCP</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/06/histbksublyso13nai.png</image:loc><image:title>histbksubLYSO13NaI</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/06/dsc_3180_li-3.jpg</image:loc><image:title>DSC_3180_LI (3)</image:title><image:caption>Ps* transport using curved guide.</image:caption></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/06/output_1mvz87.gif</image:loc><image:title>output_1mVz87</image:title><image:caption>Scattering chamber</image:caption></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/06/withwoelectrons1.png</image:loc><image:title>withWOelectrons</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/06/dsc_3180_li-2.jpg</image:loc><image:title>DSC_3180_LI (2)</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/06/output_ssombh.gif</image:loc><image:title>output_ssomBh</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/06/withwoelectrons.png</image:loc><image:title>withWOelectrons</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/06/histbksubmcp.png</image:loc><image:title>histbksubMCP</image:title></image:image><lastmod>2019-01-29T18:35:25+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2016/06/07/14th-international-workshop-on-slow-positron-beam-techniques-applications/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2016/06/slopos14photo.jpg</image:loc><image:title>slopos14photo</image:title></image:image><lastmod>2018-09-20T14:01:36+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2015/07/14/positronium-spectroscopy-spreading-the-word/</loc><lastmod>2018-09-20T13:43:23+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2018/06/16/state-selective-field-ionization-of-rydberg-positronium/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2018/06/lowfild1.png</image:loc><image:title>lowfild1</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2018/06/sgammaflip.png</image:loc><image:title>sgammaflip</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2018/06/lowfild.png</image:loc><image:title>lowfild</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2018/06/highfild.png</image:loc><image:title>highfild</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2018/06/flippingfield.png</image:loc><image:title>flippingfield</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2018/06/pulsedgraph.png</image:loc><image:title>pulsedgraph</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2018/06/ionchamb.png</image:loc><image:title>ionchamb</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2018/06/mid_field.gif</image:loc><image:title>mid_field</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2018/06/low_field.gif</image:loc><image:title>low_field</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2018/06/high_field.gif</image:loc><image:title>high_field</image:title></image:image><lastmod>2018-06-16T19:30:17+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2018/03/28/ethics-in-research-what-a-student-should-know/</loc><lastmod>2018-03-28T23:53:28+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2017/09/26/12th-international-workshop-on-positron-and-positronium-chemistry/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/09/ppc17_confphoto.jpg</image:loc><image:title>PPC17_ConfPhoto</image:title></image:image><lastmod>2017-11-22T21:07:10+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2017/02/19/sougato-bose-probing-macroscopic-quantum-superpositions-and-the-quantum-nature-of-gravity-through-levitated-objects/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/02/20170215_160812.jpg</image:loc><image:title>20170215_160812</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/02/20170215_160737.jpg</image:loc><image:title>20170215_160737</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/02/20170215_160711.jpg</image:loc><image:title>20170215_160711</image:title></image:image><lastmod>2017-02-19T00:50:28+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2017/02/13/charles-w-clark-twisting-the-neutron-wavefunction/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/02/charles_clark.jpg</image:loc><image:title>charles_clark</image:title></image:image><lastmod>2017-02-19T00:35:20+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://antimattergravity.com/2017/01/31/rydberg-ps-electrostatically-guided-in-curved-quadrupole/</loc><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/01/histtotal_lyso2nai1.png</image:loc><image:title>histtotal_lyso2nai</image:title></image:image><image:image><image:loc>https://antimattergravity.com/wp-content/uploads/2017/01/curvedguidechamber3.png</image:l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