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The Internuclear Separations and Wake Effcet of H2D+

Author: YaoHongJun
Tutor: ZhuZhouSen
School: Sichuan Normal University
Course: Particle Physics and Nuclear Physics
Keywords: Interstellar molecules Binding energy Nuclear separation Coulomb explosion Wake effects
CLC: P14
Type: Master's thesis
Year: 2011
Downloads: 2
Quote: 0
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Abstract


The experimental and theoretical study of the interaction of fast molecular ions with solids, the 1980s up new areas of development in the United States, France and other countries. Although using a conventional method (such as photon absorption and emission) have been measured on thousands of neutral molecular structure but fast molecular ions, because of the difficulty to obtain the bulk density of these methods the desired molecular ion by a conventional method, not be achieved. H 2 D as an important interstellar matter, for H 2 D Materials Science have a very high value, plasma physics, astrophysics, astrochemistry and microscopic dynamics. H 2 D reported so far little, especially the H 2 D stereochemical structure of reported. Stereochemical structure determination of H 2 D , as early as in 1993, Yang hundred square has taken advantage of Sichuan University, 720 high-resolution atomic collision device, initially obtained the H 2 D of the key long rHH and rHD, derived H 2 D is an isosceles triangle structure. The experiment H 2 D molecular ion mixed with D 2 , before and after the explosion can not be both separate interested D count of impact, so that the measured △ EDD inaccurate, inevitably affects the accuracy of rHH and RHD. To solve this problem, this paper proposes a new solution case. On the basis of the study of the ion source, under laboratory conditions to form H 2 D and D 2 the the reaction channels proportion inferred the the H 2 D ion mixed D 2 molar ratio to determine D 2 / sub> . contribution ratio of H 2 D . Origin tool and then using nonlinear fitting functions fitted Gaussian distribution function from the original energy spectrum, and then by a mixture of Gaussian distribution function to weed out the D 2 the contribution to finalize the synthesis of pure H 2 D D energy spectrum, thus improving the accuracy △ EDD. The calculation results have proved the feasibility of the program, results with measured results are in good agreement. Paper the H 2 D possible structure theory, is determined by calculating the correct structure model may structure. The paper also raises the the H 2 D debris wake effect of H of the Theory, the theory put forward by Zhu Chau Sen et al 2008 HD 2 of the theoretical model of the effect of the three-body wake, with the the H 2 D HD 2 < / sub> very similar figures related in structure. Calculated results ε = 41.12eV, the r HD = 0.940 (A | °), the r HH = 1.373 (A | °).

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