Hydrogen was not ionized abruptly

JONATHAN PRITCHARD; ABRAHAM LOEB

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Hydrogen was not ionized abruptly

机译：氢未被突然电离

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Four hundred thousand years after the Big Bang, the Universe had cooled sufficiently for hydrogen atoms to form. Hundreds of millions of years later, the first stars and galaxies had produced ionizing ultraviolet radiation that broke the hydrogen atoms into their constituent electrons and protons. This process, termed reionization, marks a major cosmological phase transition. When and how rapid this transition was are important open questions. On page 796 of this issue, Bowman and Rogers implement a new technique that allows them to rule out models in which reionization occurs abruptly.

机译：大爆炸发生40万年后，宇宙已经充分冷却以形成氢原子。亿万年后，第一批恒星和星系产生了电离紫外线，将氢原子分解成电子和质子。这个过程称为离子化，标志着主要的宇宙学相变。何时以及如何快速地进行这种过渡是重要的未决问题。在此问题的第796页中，鲍曼和罗杰斯实施了一项新技术，该技术使他们可以排除突然发生电离的模型。

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来源
《Nature》 |2010年第7325期|p.772-773|共2页
作者
JONATHAN PRITCHARD; ABRAHAM LOEB;
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作者单位

Institute for Theory and Computation, Harvard University, Cambridge, Massachusetts 02138, USA;

rnInstitute for Theory and Computation, Harvard University, Cambridge, Massachusetts 02138, USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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正文语种 eng
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1. Abrupt increase in hydrogen diffusion on transition-metal surfaces during hydrogenation catalysis [J] . Simonovis Juan, Zaera Francisco Chemical science . 2016,第7期

机译：氢化催化过程中过渡金属表面上氢扩散的突然增加
2. Abrupt increase in hydrogen diffusion on transition-metal surfaces during hydrogenation catalysis [J] . Juan Simonovis, Francisco Zaera Chemical science . 2016,第7期

机译：氢化催化过程中过渡金属表面上氢扩散的突然增加
3. Abrupt NMOS Inverter Based on Punch-Through Impact Ionization With Hysteresis in the Voltage Transfer Characteristics [J] . Moselund K. E., Bouvet D., Ionescu A. M. IEEE Electron Device Letters . 2008,第9期

机译：基于直冲冲击电离的迟滞NMOS逆变器的电压传递特性
4. Abrupt changes in microstructure and their impact on coercivity in the hydrogenation-disproportionation-desorption-recombination (HDDR) process of NdFeB alloys detected by positron lifetime spectroscopy and microstructural analysis [C] . TAKESHI NISHIUCHI, SIN-ICHIROH SAKASHITA, SATOSHI HIROSAWA, International Workshop On Rare Earth Permanent Magnet and Their Applications . 2008

机译：突然变化微观结构及其对氢化歧化 - 解吸重组（HDDR）矫顽力的影响，通过正电子寿命光谱检测的NdFeB合金和微观结构分析
5. Investigating the ionization state and structure/function relationship of ionizable residues in Escherichia coli chorismate mutase -- prephenate dehydrogenase and the catalytic trimer of aspartate transcarbamylase. [D] . Manioudakis, John. 2008

机译：研究大肠杆菌分支酸突变酶-苯甲酸酯脱氢酶和天冬氨酸转氨甲酰酶的催化三聚体的电离状态和可电离残基的结构/功能关系。
6. Abrupt increase in hydrogen diffusion on transition-metal surfaces during hydrogenation catalysis [O] . Juan Simonovis, Francisco Zaera 2016

机译：氢化催化过程中过渡金属表面上氢扩散的突然增加
7. Intense-Field Dirac Theory of Ionization of Hydrogen and Hydrogenic Ions in Infrared and Free-Electron Laser Fields [O] . Kaoru Yamanouchi, Dimitrios Charalambidis, Didier Norm, 2015

机译：红外和自由电子激光场中氢和氢离子电离的强场狄拉克理论

Hydrogen was not ionized abruptly

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