{"id":{"repo_id":"heid-diss","oai_identifier":"oai:archiv.ub.uni-heidelberg.de:6085"},"canonical_url":"https://search.dev.ndltd.org/etd/heid-diss/oai:archiv.ub.uni-heidelberg.de:6085","repository":{"repo_id":"heid-diss","name":"Universität Heidelberg","base_url":"http://archiv.ub.uni-heidelberg.de/volltextserver/cgi/oai2"},"display":{"title":"High precision x-ray spectroscopy on highly charged argon ions","abstract":"High-precision wavelength measurements on the $1s2s\\ ^3S_1 \\rightarrow 1s^2\\ ^1S_0$ ($z$'') and $1s2p\\ ^1P_1 \\rightarrow 1s^2\\ ^1S_0$ ($w$'') transitions in Ar$^{16+}$ as well as of the Lyman-$\\alpha_1$ transition in Cl$^{16+}$ with respect to the Lyman-$\\alpha_1$ transition in Ar$^{17+}$ were carried out, using a new flat crystal spectrometer installed at the Heidelberg electron beam ion trap (HD-EBIT). A novel, highly accurate technique of Bragg-angle determination was developed, employing two beams of visible light reflected on the x-ray crystal to mark the x-ray reflection position. The need for collimating entrance slits causing unacceptable x-ray flux losses is thereby avoided. Relative uncertainties of better than $\\Delta \\lambda / \\lambda < 10^{-5}$ were achieved in the measurement of all three lines. The measured Cl$^{16+}$ Lyman-$\\alpha_1$ transition energy is in perfect agreement with the theoretical prediction and previous experimental work, however $4$ times more accurate. The $z$ transition energy, never measured before in argon, agrees with predictions within its error bar. The $w$ transition energy, while in perfect agreement with but two times more accurate than earlier experimental results, disagrees with by $2\\sigma$ with predictions, pointing at their possible incompleteness.","abstract_html":"High-precision wavelength measurements on the <span class=\"etd-inline-math\">1s2s <sup>3</sup>S<sub>1</sub> \\rightarrow 1s<sup>2</sup> <sup>1</sup>S<sub>0</sub></span> ($z$&#x27;&#x27;) and <span class=\"etd-inline-math\">1s2p <sup>1</sup>P<sub>1</sub> \\rightarrow 1s<sup>2</sup> <sup>1</sup>S<sub>0</sub></span> ($w$&#x27;&#x27;) transitions in Ar<span class=\"etd-inline-math\"><sup>16+</sup></span> as well as of the Lyman-<span class=\"etd-inline-math\">&alpha;<sub>1</sub></span> transition in Cl<span class=\"etd-inline-math\"><sup>16+</sup></span> with respect to the Lyman-<span class=\"etd-inline-math\">&alpha;<sub>1</sub></span> transition in Ar<span class=\"etd-inline-math\"><sup>17+</sup></span> were carried out, using a new flat crystal spectrometer installed at the Heidelberg electron beam ion trap (HD-EBIT). A novel, highly accurate technique of Bragg-angle determination was developed, employing two beams of visible light reflected on the x-ray crystal to mark the x-ray reflection position. The need for collimating entrance slits causing unacceptable x-ray flux losses is thereby avoided. Relative uncertainties of better than <span class=\"etd-inline-math\">\\Delta \\lambda / \\lambda &lt; 10<sup>-5</sup></span> were achieved in the measurement of all three lines. The measured Cl<span class=\"etd-inline-math\"><sup>16+</sup></span> Lyman-<span class=\"etd-inline-math\">&alpha;<sub>1</sub></span> transition energy is in perfect agreement with the theoretical prediction and previous experimental work, however $4$ times more accurate. The $z$ transition energy, never measured before in argon, agrees with predictions within its error bar. The $w$ transition energy, while in perfect agreement with but two times more accurate than earlier experimental results, disagrees with by <span class=\"etd-inline-math\">2&sigma;</span> with predictions, pointing at their possible incompleteness.","abstract_has_math":true,"creators":["Bruhns, Hjalmar"],"institution":"Universität Heidelberg","degree_name":null,"degree_level":"thesis.doctoral","degree_discipline":null,"degree_department":null,"school":null,"contributors":["Ullrich, Joachim"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2005,"date_issued":"2005-12-21","date_published":"2005-12-21","updated_at":"2026-07-24T02:30:19Z","subjects":[],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://www.ub.uni-heidelberg.de/archiv/6085","outbound_label":"Repository record","outbound_source":"source_url"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Ullrich, Joachim"]},{"key":"dc:creator","label":"Author","values":["Bruhns, Hjalmar"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:publisher","label":"Institution","values":["Universitätsbibliothek Heidelberg"]},{"key":"dc:type","label":"Dc Type","values":["doctoralThesis"]},{"key":"thesis:degree_level","label":"Degree Level","values":["thesis.doctoral"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Universität Heidelberg"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["High-precision wavelength measurements on the $1s2s\\ ^3S_1 \\rightarrow 1s^2\\ ^1S_0$ ($z$'') and $1s2p\\ ^1P_1 \\rightarrow 1s^2\\ ^1S_0$ ($w$'') transitions in Ar$^{16+}$ as well as of the Lyman-$\\alpha_1$ transition in Cl$^{16+}$ with respect to the Lyman-$\\alpha_1$ transition in Ar$^{17+}$ were carried out, using a new flat crystal spectrometer installed at the Heidelberg electron beam ion trap (HD-EBIT). A novel, highly accurate technique of Bragg-angle determination was developed, employing two beams of visible light reflected on the x-ray crystal to mark the x-ray reflection position. The need for collimating entrance slits causing unacceptable x-ray flux losses is thereby avoided. Relative uncertainties of better than $\\Delta \\lambda / \\lambda < 10^{-5}$ were achieved in the measurement of all three lines. The measured Cl$^{16+}$ Lyman-$\\alpha_1$ transition energy is in perfect agreement with the theoretical prediction and previous experimental work, however $4$ times more accurate. The $z$ transition energy, never measured before in argon, agrees with predictions within its error bar. The $w$ transition energy, while in perfect agreement with but two times more accurate than earlier experimental results, disagrees with by $2\\sigma$ with predictions, pointing at their possible incompleteness.","In dieser Arbeit wurden Hochpräzisionsmessungen der Wellenlängen der $1s2s\\ ^3S_1 \\rightarrow 1s^2\\ ^1S_0$ ($z$'') und $1s2p\\ ^1P_1 \\rightarrow 1s^2\\ ^1S_0$ ($w$'') Übergänge in Ar$^{16+}$, sowie des Lyman-$\\alpha_1$ Übergangs in Cl$^{16+}$ unter Nutzung der Lyman-$\\alpha_1$ Übergangswellenlänge in Ar$^{17+}$ als Referenz mit einem neuen Flachkristallröntgenspektrometer an der Heidelberg Elektronenstrahlionenfalle (HD-EBIT) durchgeführt. Ein neuartiges, hochpräzises Verfahren zur Braggwinkelbestimmung wurde entwickelt, welches zwei Strahlen sichtbaren Lichts zur Feststellung des Reflektionsorts der Röntgenstrahlung nutzt, wo\\-durch der Gebrauch von Eingangsspalten vermieden wird, durch welche sonst ein nicht hinnehmbarer Verlust an Röntgenstrahlung durch Kollimation entstünde. Re\\-lative Genauig\\-keiten besser als $\\Delta \\lambda / \\lambda < 10^{-5}$ wurden für die Messung aller drei Linien erzielt. Die gemessene Energie des Cl$^{16+}$ Lyman-$\\alpha_1$ Übergangs ist in hervorragender Übereinstimmung mit der theoretischen Vorhersage sowie früheren experimentellen Arbeiten, jedoch $4$ mal genauer. Die Energie des $z$-Übergangs, welche nie zuvor in Argon gemessen wurde, stimmt mit den Vorhersagen innerhalb des Fehlerbalkens überein. Die $w$-Übergangsenergie, obschon doppelt so genau wie und in hervorragender Übereinstimmung mit früheren experimentellen Werten, weicht von der Vorhersage um mehr als $2\\sigma$ ab und deutet auf deren Unvollständigkeit hin."]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["High precision x-ray spectroscopy on highly charged argon ions","Hochpräzisions-Röntgenspektroskopie an hochgeladenen Argon-Ionen"]}]}],"canonical_facts":{"dc:contributor":["Ullrich, Joachim"],"dc:creator":["Bruhns, Hjalmar"],"dc:description.abstract":["High-precision wavelength measurements on the $1s2s\\ ^3S_1 \\rightarrow 1s^2\\ ^1S_0$ ($z$'') and $1s2p\\ ^1P_1 \\rightarrow 1s^2\\ ^1S_0$ ($w$'') transitions in Ar$^{16+}$ as well as of the Lyman-$\\alpha_1$ transition in Cl$^{16+}$ with respect to the Lyman-$\\alpha_1$ transition in Ar$^{17+}$ were carried out, using a new flat crystal spectrometer installed at the Heidelberg electron beam ion trap (HD-EBIT). A novel, highly accurate technique of Bragg-angle determination was developed, employing two beams of visible light reflected on the x-ray crystal to mark the x-ray reflection position. The need for collimating entrance slits causing unacceptable x-ray flux losses is thereby avoided. Relative uncertainties of better than $\\Delta \\lambda / \\lambda < 10^{-5}$ were achieved in the measurement of all three lines. The measured Cl$^{16+}$ Lyman-$\\alpha_1$ transition energy is in perfect agreement with the theoretical prediction and previous experimental work, however $4$ times more accurate. The $z$ transition energy, never measured before in argon, agrees with predictions within its error bar. The $w$ transition energy, while in perfect agreement with but two times more accurate than earlier experimental results, disagrees with by $2\\sigma$ with predictions, pointing at their possible incompleteness.","In dieser Arbeit wurden Hochpräzisionsmessungen der Wellenlängen der $1s2s\\ ^3S_1 \\rightarrow 1s^2\\ ^1S_0$ ($z$'') und $1s2p\\ ^1P_1 \\rightarrow 1s^2\\ ^1S_0$ ($w$'') Übergänge in Ar$^{16+}$, sowie des Lyman-$\\alpha_1$ Übergangs in Cl$^{16+}$ unter Nutzung der Lyman-$\\alpha_1$ Übergangswellenlänge in Ar$^{17+}$ als Referenz mit einem neuen Flachkristallröntgenspektrometer an der Heidelberg Elektronenstrahlionenfalle (HD-EBIT) durchgeführt. Ein neuartiges, hochpräzises Verfahren zur Braggwinkelbestimmung wurde entwickelt, welches zwei Strahlen sichtbaren Lichts zur Feststellung des Reflektionsorts der Röntgenstrahlung nutzt, wo\\-durch der Gebrauch von Eingangsspalten vermieden wird, durch welche sonst ein nicht hinnehmbarer Verlust an Röntgenstrahlung durch Kollimation entstünde. Re\\-lative Genauig\\-keiten besser als $\\Delta \\lambda / \\lambda < 10^{-5}$ wurden für die Messung aller drei Linien erzielt. Die gemessene Energie des Cl$^{16+}$ Lyman-$\\alpha_1$ Übergangs ist in hervorragender Übereinstimmung mit der theoretischen Vorhersage sowie früheren experimentellen Arbeiten, jedoch $4$ mal genauer. Die Energie des $z$-Übergangs, welche nie zuvor in Argon gemessen wurde, stimmt mit den Vorhersagen innerhalb des Fehlerbalkens überein. Die $w$-Übergangsenergie, obschon doppelt so genau wie und in hervorragender Übereinstimmung mit früheren experimentellen Werten, weicht von der Vorhersage um mehr als $2\\sigma$ ab und deutet auf deren Unvollständigkeit hin."],"dc:format.medium":["application/pdf"],"dc:publisher":["Universitätsbibliothek Heidelberg"],"dc:title":["High precision x-ray spectroscopy on highly charged argon ions","Hochpräzisions-Röntgenspektroskopie an hochgeladenen Argon-Ionen"],"dc:type":["doctoralThesis"],"thesis:degree_level":["thesis.doctoral"],"thesis:institution_name":["Universität Heidelberg"]},"updated_at":"2026-07-24T02:30:19Z"}