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Production of slow antihydrogen from cold antimatter plasmas

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Production of slow antihydrogen from cold antimatter plasmas
作者:	Oxley, Paul Kevin.
面頁冊數:	179 p.
附註:	Adviser: Gerald Gabrielse.
附註:	Source: Dissertation Abstracts International, Volume: 65-01, Section: B, page: 0259.
Contained By:	Dissertation Abstracts International65-01B.
標題:	Physics, Atomic.
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3117999
ISBN:	0496654233

Production of slow antihydrogen from cold antimatter plasmas
Oxley, Paul Kevin.

Production of slow antihydrogen from cold antimatter plasmas [electronic resource] - 179 p.

Adviser: Gerald Gabrielse.

Thesis (Ph.D.)--Harvard University, 2004.

A series of experiments are performed to measure how tightly bound the atoms are, and a theoretical investigation is made of the dynamics of an atom under the experimental conditions. This infers a positron-antiproton separation of &sim;0.2 mum, which indicates that the atoms are formed in a three body recombination process, and then collisionally de-excited while inside the positron plasma.

ISBN: 0496654233Subjects--Topical Terms:

227348
Physics, Atomic.

Production of slow antihydrogen from cold antimatter plasmas
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502 $a Thesis (Ph.D.)--Harvard University, 2004.
520 # $a A series of experiments are performed to measure how tightly bound the atoms are, and a theoretical investigation is made of the dynamics of an atom under the experimental conditions. This infers a positron-antiproton separation of &sim;0.2 mum, which indicates that the atoms are formed in a three body recombination process, and then collisionally de-excited while inside the positron plasma.
520 # $a Several major achievements are detailed in this thesis. Large numbers of antiprotons are captured and cooled to 4 Kelvin in a Penning trap. Antiprotons are provided by the Antiproton Decellerator at CERN, and the accumulation of cold, trapped antiprotons is found to increase in proportion to the number delivered by CERN. As many antiprotons as possible are required to achieve the goal of antihydrogen production.
520 # $a The interaction of antiprotons and positrons is induced by the application of radio-frequency drives. During the interaction large numbers of antihydrogen atoms are created and detected with a newly-devised background-free detection technique. A total of 718 atoms are directly detected in a 1 hour trial.
520 # $a The physical properties of positron and antiproton plasmas are measured for the first time in the ATRAP apparatus. These findings are essential for interpreting the results of antihydrogen experiments, for accurate calculations of recombination rates, and for the design of future experiments.
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