Tunable VUV pump and tunable VUV probe experiments on the photodissociation dynamics of atmospheric molecules using slice velocity imaging for detection

使用切片速度成像进行检测的大气分子光解动力学的可调 VUV 泵和可调 VUV 探针实验

基本信息

  • 批准号:
    1301501
  • 负责人:
  • 金额:
    $ 36万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2013
  • 资助国家:
    美国
  • 起止时间:
    2013-09-15 至 2017-08-31
  • 项目状态:
    已结题

项目摘要

With this award, funded by the Chemical Structure, Dynamics, and Mechanisms - A Program in the Division of Chemistry, Prof. William M. Jackson from the University of California, Davis will characterize the photochemical channels of molecules important in planetary atmospheres, comets, and the interstellar medium in the spectral region between 190.8 and 73.8 nm. The initial studies will be done with the nitrogen, oxygen, nitric oxide, and carbon monoxide molecules. The first three molecules are important for the chemistry of the upper atmosphere, while the last, carbon monoxide is the second most abundant molecule in the interstellar medium and is important in the early development of solar systems. A unique apparatus has been developed with two tunable VUV lasers based on resonance enhanced four wave mixing that has a bandwidth of 0.4 wavenumbers and is tunable between 190.8 and 73.8 nm. One of these tunable lasers can be used to excite the molecule to a particular energy state characterized by the electronic, vibrational, and rotational energy in the molecule and the other can be used to ionize the product atoms that are formed in the dissociation. These lasers are connected to a slice imaging apparatus that can determine the mass as well as the velocity and angular distributions of the product atoms. This information provides critical information about how the specific internal energy of an excited molecule affects the conservation of spin and the fine structure distributions of the product atoms and it provides a critical test for the best theoretical calculations for excited state potential energy curves as well as the dissociation process that occurs on these curves.Simple molecules such as nitrogen, oxygen, nitric oxide, and carbon monoxide only absorb high-energy solar light. This light cannot be seen by the naked eye and it will not travel in air. Yet this light from the sun determines how long molecules such as nitrogen, oxygen and NO can exist in the earth's and other planets atmospheres. It provides the energy for the chemical reactions occurring in these regions as well as those that occurred during the early years of planet formation in this and other solar systems. To truly understand the chemical reactions that do occur in the atmosphere, it is important to understand how this solar light forms the reactive atoms and fragments. These reactive species, in turn, undergo chemical reactions with stable trace species such as carbon dioxide that help determine the climate here on earth. Solar light with different amounts of energy can form nitrogen and oxygen atoms from nitrogen and oxygen molecules that can react differently with both the trace species such as carbon dioxide as well as with the oxygen and nitrogen molecules themselves. The work that will be performed on this grant will provide the information about how the energy of the atoms that is formed changes with the solar energy of the solar light that is absorbed. This information can then be put in the models that are used to predict the future behavior of trace components in our atmosphere as well as the atmospheres of other planets and astronomical bodies.
该奖项由化学结构,动力学和机制-化学系的一个项目资助,威廉M。来自加州大学戴维斯分校的杰克逊将描述行星大气、彗星和星际介质中重要分子在190.8至73.8纳米光谱区域的光化学通道。最初的研究将用氮气、氧气、一氧化氮和一氧化碳分子进行。前三种分子对上层大气的化学性质很重要,而最后一种,一氧化碳是星际介质中第二丰富的分子,对太阳系的早期发展很重要。一个独特的装置已经开发出两个可调谐的真空紫外激光器的基础上共振增强四波混频,具有0.4波数的带宽和可调谐的190.8和73.8 nm之间。这些可调谐激光器中的一个可用于将分子激发到由分子中的电子能、振动能和旋转能表征的特定能态,另一个可用于将在解离中形成的产物原子激发。这些激光器连接到一个切片成像设备,可以确定产品原子的质量以及速度和角分布。这些信息提供了关于激发态分子的比内能如何影响自旋守恒和产物原子的精细结构分布的关键信息,并且它为激发态势能曲线的最佳理论计算以及在这些曲线上发生的解离过程提供了关键测试。简单分子如氮,氧,一氧化氮,而一氧化碳只吸收高能量的太阳光。这种光不能用肉眼看到,也不能在空气中传播。然而,这种来自太阳的光决定了氮、氧和NO等分子在地球和其他行星的大气中可以存在多久。它为这些区域发生的化学反应提供了能量,也为这个和其他太阳系中行星形成初期发生的化学反应提供了能量。要真正了解大气中发生的化学反应,重要的是要了解太阳光如何形成反应性原子和碎片。这些活性物质,反过来,与稳定的痕量物质发生化学反应,如二氧化碳,有助于确定地球上的气候。具有不同能量的太阳光可以从氮和氧分子形成氮和氧原子,氮和氧分子可以与二氧化碳等痕量物质以及氧和氮分子本身发生不同的反应。这项工作将提供有关形成的原子的能量如何随着被吸收的太阳光的太阳能而变化的信息。然后,这些信息可以被放入模型中,用于预测我们大气层以及其他行星和天体大气层中痕量成分的未来行为。

项目成果

期刊论文数量(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Evidence for direct molecular oxygen production in CO2 photodissociation
  • DOI:
    10.1126/science.1257156
  • 发表时间:
    2014-10-03
  • 期刊:
  • 影响因子:
    56.9
  • 作者:
    Lu, Zhou;Chang, Yih Chung;Jackson, William M.
  • 通讯作者:
    Jackson, William M.
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William Jackson其他文献

Regionalization at the International Union for the Conservation of Nature (IUCN)
  • DOI:
    10.1016/j.sbspro.2011.03.021
  • 发表时间:
    2011-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    William Jackson
  • 通讯作者:
    William Jackson
PREVENTING VENOUS THROMBOEMBOLISM FOLLOWING STROKE: INSIGHTS FROM A METAANALYSIS
  • DOI:
    10.1378/chest.132.4_meetingabstracts.629a
  • 发表时间:
    2007-10-01
  • 期刊:
  • 影响因子:
  • 作者:
    Andrew F. Shorr;William Jackson;John Sherner;Lisa Moores
  • 通讯作者:
    Lisa Moores
Rural/Regional Place of Residence Impacts Post Allogeneic Bone Marrow Transplant Overall Survival of Australian Patients with Acute Myeloid Leukaemia: An Anztct Registry Study
  • DOI:
    10.1182/blood-2024-204669
  • 发表时间:
    2024-11-05
  • 期刊:
  • 影响因子:
  • 作者:
    Zulekha Khan;Glen A Kennedy;Ashleigh P Scott;Cameron Curley;John Kwan;Kate Melville;Rebecca Booth;Ashish Bajel;David S. Ritchie;Katherine Cummins;John Moore;Peter Bardy;Naranie Shanmuganathan;Shaun Fleming;Bianca Cirone;Julian Cooney;William Jackson;David Kliman;Julija Sipavicius;Edward Abadir
  • 通讯作者:
    Edward Abadir
Networks of spiking neurons in modeling and problem solving
建模和问题解决中的尖峰神经元网络
  • DOI:
    10.1016/j.neucom.2004.03.007
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    6
  • 作者:
    K. Cios;Waldemar Swiercz;William Jackson
  • 通讯作者:
    William Jackson
Proceedings of Patient Reported Outcome Measure’s (PROMs) Conference Oxford 2017: Advances in Patient Reported Outcomes Research
  • DOI:
    10.1186/s12955-017-0757-y
  • 发表时间:
    2017-10-01
  • 期刊:
  • 影响因子:
    3.400
  • 作者:
    Galina Velikova;Jose M. Valderas;Caroline Potter;Laurie Batchelder;Christine A’Court;Matthew Baker;Jennifer Bostock;Angela Coulter;Ray Fitzpatrick;Julien Forder;Diane Fox;Louise Geneen;Elizabeth Gibbons;Crispin Jenkinson;Karen Jones;Laura Kelly;Michele Peters;Brendan Mulhern;Alexander Labeit;Donna Rowen;Keith Meadows;Jackie Elliott;John Brazier;Emma Knowles;Anju Keetharuth;John Brazier;Janice Connell;Jill Carlton;Lizzie Taylor Buck;Thomas Ricketts;Michael Barkham;Pushpendra Goswami;Sam Salek;Tatyana Ionova;Esther Oliva;Adele K. Fielding;Marina Karakantza;Saad Al-Ismail;Graham P. Collins;Stewart McConnell;Catherine Langton;Daniel M. Jennings;Roger Else;Jonathan Kell;Helen Ward;Sophie Day;Elizabeth Lumley;Patrick Phillips;Rosie Duncan;Helen Buckley-Woods;Ahmed Aber;Gerogina Jones;Jonathan Michaels;Ian Porter;Jaheeda Gangannagaripalli;Antoinette Davey;Ignacio Ricci-Cabello;Kirstie Haywood;Stine Thestrup Hansen;Jose Valderas;Deb Roberts;Anil Gumber;Bélène Podmore;Andrew Hutchings;Jan van der Meulen;Ajay Aggarwal;Sujith Konan;Andrew Price;William Jackson;Nick Bottomley;Michael Philiips;Toby Knightley-Day;David Beard;Elizabeth Gibbons;Ray Fitzpatrick;Joanne Greenhalgh;Kate Gooding;Elizabeth Gibbons;Chema Valderas;Judy Wright;Sonia Dalkin;David Meads;Nick Black;Carol Fawkes;Robert Froud;Dawn Carnes;Andrew Price;Jonathan Cook;Helen Dakin;James Smith;Sujin Kang;David Beard;Catrin Griffiths;Ella Guest;Diana Harcourt;Mairead Murphy;Sandra Hollinghurst;Chris Salisbury;Jill Carlton;Jackie Elliott;Donna Rowen;Anqi Gao;Andrew Price;David Beard;Agnieszka Lemanska;Tao Chen;David P. Dearnaley;Rajesh Jena;Matthew Sydes;Sara Faithfull;A. E. Ades;Daphne Kounali;Guobing Lu;Ines Rombach;Alastair Gray;Crispin Jenkinson;Oliver Rivero-Arias;Patricia Holch;Marie Holmes;Zoe Rodgers;Sarah Dickinson;Beverly Clayton;Susan Davidson;Jacqui Routledge;Julia Glennon;Ann M. Henry;Kevin Franks;Galina Velikova;Roma Maguire;Lisa McCann;Teresa Young;Jo Armes;Jenny Harris;Christine Miaskowski;Grigorios Kotronoulas;Morven Miller;Emma Ream;Elizabeth Patiraki;Alexander Geiger;Geir V. Berg;Adrian Flowerday;Peter Donnan;Paul McCrone;Kathi Apostolidis;Patricia Fox;Eileen Furlong;Nora Kearney;Chris Gibbons;Felix Fischer;Chris Gibbons;Joel Coste;Jose Valderas Martinez;Matthias Rose;Alain Leplege;Sarah Shingler;Natalie Aldhouse;Tamara Al-Zubeidi;Andrew Trigg;Helen Kitchen;Antoinette Davey;Ian Porter;Colin Green;Jose M. Valderas;Joanna Coast;Sarah Smith;Jolijn Hendriks;Nick Black;Koonal Shah;Oliver Rivero-Arias;Juan-Manuel Ramos-Goni;Simone Kreimeier;Mike Herdman;Nancy Devlin;Aureliano Paolo Finch;John E. Brazier;Clara Mukuria;Bernarda Zamora;David Parkin;Yan Feng;Andrew Bateman;Mike Herdman;Nancy Devlin;Thomas Patton;Nils Gutacker;Koonal Shah
  • 通讯作者:
    Koonal Shah

William Jackson的其他文献

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{{ truncateString('William Jackson', 18)}}的其他基金

RII Track-4: Using Zircon (U-Th)/He Thermochronology to Explore a Link Between Mesozoic Tectonism and Nonmarine Sedimentation in the Eastern Tibetan Plateau
RII Track-4:利用锆石 (U-Th)/He 热年代学探索青藏高原东部中生代构造运动与海相沉积之间的联系
  • 批准号:
    1929117
  • 财政年份:
    2019
  • 资助金额:
    $ 36万
  • 项目类别:
    Standard Grant
Going native: racial transgression in the British world, 1880-1939
本土化:英国世界的种族越轨,1880-1939
  • 批准号:
    AH/L004801/1
  • 财政年份:
    2014
  • 资助金额:
    $ 36万
  • 项目类别:
    Fellowship
Slice Imaging Studies of Vibration, Rotational and Electronic Mediated Photodissociation and Photoionization of C2
C2 振动、旋转和电子介导的光解离和光电离化的切片成像研究
  • 批准号:
    0957872
  • 财政年份:
    2010
  • 资助金额:
    $ 36万
  • 项目类别:
    Continuing Grant
Studies of the autoionization of super-excited singlet sulfur and ion-pair formation in CS2 by means of ion velocity imaging
离子速度成像研究CS2中超激发单线态硫的自电离和离子对形成
  • 批准号:
    0503765
  • 财政年份:
    2005
  • 资助金额:
    $ 36万
  • 项目类别:
    Continuing Grant
Acquisition of an Ultrahigh-Resolution Vacuum Ultraviolet Laser System
获得超高分辨率真空紫外激光系统
  • 批准号:
    0342829
  • 财政年份:
    2004
  • 资助金额:
    $ 36万
  • 项目类别:
    Standard Grant
Molecular Dynamics Studies of the Photodissociation of Ions, Photon Induced Ion-pair Formation, and Photon Induced Rydberg Dissociation Using a Velocity Ion Imaging Apparatus
使用速度离子成像设备进行离子光解离、光子诱导离子对形成和光子诱导里德伯解离的分子动力学研究
  • 批准号:
    0100965
  • 财政年份:
    2001
  • 资助金额:
    $ 36万
  • 项目类别:
    Continuing Grant
Supersonic Beam Studies of Collisions Between Rare Gas Metastable Atoms and Fullerenes
稀有气体亚稳原子与富勒烯碰撞的超音速束研究
  • 批准号:
    9713929
  • 财政年份:
    1998
  • 资助金额:
    $ 36万
  • 项目类别:
    Continuing Grant
Chemistry Career Planning Workshop for Underrepresented Minority Students
少数族裔学生化学职业规划研讨会
  • 批准号:
    9522175
  • 财政年份:
    1995
  • 资助金额:
    $ 36万
  • 项目类别:
    Standard Grant
Firm Specific Menu Costs, Imperfect Competition, and Sticky Prices
公司特定的菜单成本、不完全竞争和粘性价格
  • 批准号:
    9410626
  • 财政年份:
    1994
  • 资助金额:
    $ 36万
  • 项目类别:
    Continuing Grant
Chemistry Career Planning Workshop For Underrepresented Minority Students, University of California, Davis, August 7-9, 1993
为代表性不足的少数族裔学生举办的化学职业规划研讨会,加州大学戴维斯分校,1993 年 8 月 7-9 日
  • 批准号:
    9308222
  • 财政年份:
    1993
  • 资助金额:
    $ 36万
  • 项目类别:
    Standard Grant

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チタン結晶構造制御とVUV照射による骨結合促進可能なインプラント表面開発
通过控制钛晶体结构和真空紫外线照射,开发可促进骨整合的种植体表面
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Development of a VUV sensor test stand for nEXO
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Ultrafast Laser Spectroscopy with Photons from the IR to the VUV
从 IR 到 VUV 光子的超快激光光谱
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  • 批准号:
    326321085
  • 财政年份:
    2017
  • 资助金额:
    $ 36万
  • 项目类别:
    Research Grants
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