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Radu Cazan

Towards sympathetic cooling of trapped ions with laser-cooled Mg+ ions for mass spectrometry and laser spectroscopy. Radu Cazan. M. Bussmann, Int.J.MassSpec. 251 , 179(2006). The Purpose. Setup of a system for cooling ions in a trap to a very low temperature, regardless of their

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Radu Cazan

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  1. Towardssympatheticcoolingoftrappedionswithlaser-cooled Mg+ ionsformassspectrometryandlaserspectroscopy Radu Cazan

  2. M. Bussmann, Int.J.MassSpec. 251, 179(2006) The Purpose • Setup of a system for cooling ions in a trap to a very low temperature, • regardless of their • - charge state, • - energy level structure or • - other parameters • ->sympathetic cooling by laser cooled Mg ions.

  3. An overview of cooling techniques

  4. First resonator

  5. First resonator EnhancementfactorA~40-60 P559=325 mW for P1118=970 mW ~775 mW coupled

  6. First resonator - resized & refurbishedlaser Smaller cavity: + increased FSR = + increased bandwidth + better stability - up to 10% less output in our case P=1.85 W in twomodes + 0.45 W A.S.E. P559=170-210 mW for P1118~1050 mW ?% ASE & 2nd mode Maximum c.e.~57% =>P1118~600 mW

  7. Second resonator

  8. Second resonator P279=16.7 mW max ~15 mW average Enhancementfactor A~60-70 for P559~210 mW ~170 mW coupled

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