• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

1990 Fiscal Year Final Research Report Summary

An Investigation of Creation and Destruction Processes of Superexcited Molecules as sSudied by Using Synchrotron Radiation.

Research Project

Project/Area Number 01430001
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field 物理化学一般
Research InstitutionTokyo Institute of Technology

Principal Investigator

HATANO Yoshiko  Tokyo Inst. Tech., Dept. Chem., Professor, 理学部, 教授 (90016121)

Co-Investigator(Kenkyū-buntansha) TANAKA Kenichiro  National. Lab. High Energy Phys., Photon Factory, Associate professor, 放射光実験施設, 助教授 (90106162)
KAMETA Kosei  Tokyo Inst. Tech., Dept. Chem., Res. Associate, 理学部, 教務職員 (90214551)
UKAI Masatoshi  Tokyo Inst. Tech., Dept. Chem., Res. Associate, 理学部, 助手 (80192508)
KOUCHI Noriyuki  Tokyo Inst. Tech., Dept. Chem., Associate Professor, 理学部, 助教授 (50161873)
Project Period (FY) 1989 – 1990
KeywordsSynchrotron radiation / Superexcited molecule / Neutral dissociation / Autoionization / VUV-monochromator / Coincidence system / Detection of photoelectron / Detection of optical emission
Research Abstract

On the existence and nature of superexcited molecules, the present investigator demonstrated experimentally for the first time through some studies of radiation chemistry, and continued the research using electron impact studies on simple molecules. In the recent few years, studies on the superexcited molecules by means of synchrotron radiation has become, internationally, an important scientific research subject. From the above mentioned background, the present investigation aimed a detailed experimental study on the creation and destruction processes of superexcited molecules by using various advantageous properties of synchrotron radiation, which would provide various hot information to the worldーwide scientific and technological communities.
In order to realize the purpose, the present investigators have built and standardized some experimental instruments based on the previous setーup to obtain experimental information about photoabsorption, photoionization, and photodissociation of … More superexcited molecules. Practically, they have built
(A) VUV (vacuumーultraviolet) -monochromator equipped with a ultraーhigh vacuum pumping system,
(B) advanced coincidence detection system for optical emissions with high timeーresolution, and
(C) photoelectron detection system.
Among the above systems, system (A) has been employed for detection of VUV-optical emissions from neutral fragments produced via neutral dissociation of superexcited molecules, system (B) for measurements of lifetimes of optical emissions from dissociation fragments or superexcited molecules themseles, and system (C) for detection and energy analysis of photoelectrons emitted via autoionization of superexcited molecules.
By using the systems the present investigators have obtained detailed information about the creation and destruction processes of simple superexcited molecules, which has been revealed in the correct, absolute, and comprehensive measurements of the cross sections for
(i) photoabsorption, photoionization, and photodissociation of C_2H_2, SiH_4, and Si_2H_6,
(ii) partial photoionization and dissociative excitation of O_2, CO, N_2, and CO_2, and
(iii) angularーmomentum dependent dissociation of H_2->H(31)+H(ls).
As shown above, the present investigation has been carried out according to schedule without any severe delay and difficulty. Less

  • Research Products

    (46 results)

All Other

All Publications (46 results)

  • [Publications] 小泉 均: "VUVーoptical cscillator strength distributions of molecules and their implications to early events in radiation chemistry." Radiation Physics and Chemistry.34. 87-92 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鵜飼 正敏: "Photoionization quantum yields of some simple organic molesules." Abstracts of contributed papers,XVI International Conferーence on the Physics of Electronic and Atomic Collisons.(New York,USA). 53 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鵜飼 正敏: "Nonーionizing decay of superexcited C_2H_2 in the vacuum ultraviolet region." Abstracts of contributed papers,XVI,Internation Conferーence on the Physics of Electronic and Atomic Collisions.(New York,USA). 54- (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 田中 健一郎: "High flux VUV beamline for photochemical processing study at Photo Factory" Reciews of Scientific Instruments. 60. 2252- (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鵜飼 正敏: "Dissociation dynamics of superxcite molecules." Book of abstracts,The 1989 International Congress of Pacific Basin Societies(Symposium invited lecture)(Hawaii,USA). 0522- (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鵜飼 正敏: "Neutral dissociation of superexcited molecules." Proceedings of the 7th symposfum on PLASM PROCESSING.(Tokyo). 245-248 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鵜飼 正敏: "Photonizaton of(O_2)_2,(O_2)_3,and Ar・O_2 in the EUV region.ーState selective lonization of O_2 in a frameword of van der Waals moleculesー" Chemical Physics Letters.167. 334-340 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 亀田 幸成: "Photoabsorption cross section and photonization quantum yield of silane in the EUV region." Proceedings of the 7th symposium on PLASMA PROCEOSING.(Tokyo). 249-252 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鵜飼 正敏: "An attempt of fluorescence lifetime measurements using the pulse structure of Photon Factory." Photon Factory Activity Reports 1989.#7. 278- (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 亀田 幸成: "Absolute measurements of photoabsorption cross section and photoーionzation quantum yield of siH_4" Photon Factory Activity Report 1989. #7. 279- (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 市川 行和: "Cross sections for collisions of electrons and photons with oxygen molecules." Journal of Physical and Chemical Reference Data.18. 23-42 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 繁政 英治: "Ionic fragmentation of SiH_4 following Kーshell excitation" Physica Scripta. 41. 67-70 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 籏野 嘉彦: "“1989環太平洋国際化学会議(PACIFICHEM'89)シンポジウム 「シンクロトロン放射光の化学への応用」の報告"" 放射光. 3. 326-327 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 籏野 嘉彦: "“シンクロトロン放射光"" 放射線化学. 50. 40-45 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Kameta: "Absolute measurements of photoabsorption and photoionization cross cross sections of disilane in the EUV region." Proceedings of the 8th symposium on PLASMA PROCESSING.337-340 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 田中 健一郎: "放射光パルス利用実験" 放射光. 4. 29-35 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 上田 潔: "Threshold behavior of the multiplyーcharged ーphotoin yields near the Ar Kーedge." J.Phys.,. B24. 605-613 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鵜飼 正敏: "The role shape resonance in ionizing and nonーionizing decays of superexcited C_2H_2 in EUV region." Photon Factory Activity Report 1990.(Natnl.Lab.High Energy Phys.). (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 亀田 幸成: "Absolute measurements of photoabsorption cross sections,photoionization cross sections,and photoionization quantum yields of silane and disilane in the 13ー22 eV reqion." Photon Factory Activity Report 1990.(Natnl.Lab.High Energy Phys.). (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鵜飼 正敏: "Fluorescence excitation spectra excited by photodissociation and photoionization of CO_2." Photon Factory Activity Report 1990.(Natnl. Lab.Energy Phys.). (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 河内 宣之: "Angular momentum distribution measurement of excited hydrogen atoms produced in the photoionization of H_2 by means of single bunch operーation of Pf ring." Phton Factory Activity Report 1990.(Natnl.Lab.High Energy Phys.). (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 亀田 幸成: "Absolute measurements of photoabsorption cross sections,photoーionization cross sections.and photoinization quantum yields of silane in the 13ー40 eV region." J.Chem.Phys.,.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鵜飼 正敏: "Ionizing and nonーionizinig decays of superexcited acetlene molecules in the extremeーUV region." J.Chem.Phys.,.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Koizumi, K. Shinsaka, and Y. Hatano: ""VUV-optical oscillator strength distributions of molecules and their implications to early events in radiation chemistry"" Radiat. Phys. Chem.34. 87-92 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Ukai, K. Kameta, K. Shinsaka, R. Chiba, T. Kamosaki, H. Koizumi, Y. Ito, K. Tanaka, and Y. Hatano: ""Photoionization quantum yields of some simple organic molecules"" Proc. 16th Int. Conf. on Physics of Electronic and Atomic Collisions, eds. A. Dalgarno, R. S. Freund, M. S. Lubell & T. B. Lucatorto,. New York. 53 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Ukai, R. Chiba, K. Kameta, K. Shinsaka, N. Kouchi, K. Tanaka, Y. Ito, K. Tanaka, and Y. Hatono: ""Non-ionizing decay of superexcited C_2 H_2 in the vacuum ultraviolet region"" Proc. 16th Int. Conf. on Physics of Electronic and Atomic Collisions, eds. A. Dalgarno, R. S. Freund, M. S. Lubell & T. B. Lucatorto. New York. 54 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Tanaka, H. Kato, T. Kikuchi, and A. Yagishita: ""High flux VUV geamline for photochemical processing study at Photon Factory"" Rev. Sci. Instrum.60. 2252 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Ukai: ""Dissociation dynamics of superexcited molecules"" Book of abstracts, The 1989 International Congress of Pacific Basin Societies. Hawaii. 09-522 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Ukai, K. Kameta, N. Kouchi, R. Chiba, K. Nagano, H. Umemoto, K. Shinsaka, K. Tanaka, Y. Ito, and Y. Hatano: ""Neutral dissociation of superexcited molecules"" Proc. 7th symp. PLASMA PROCESSING, eds. I. Kato and R. Itatani. Tokyo. 245-248 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Kameta, M. Ukai, R. Chiba, K. Nagano, N. Kouchi, K. Tanaka, and Y. Hatano: ""Photoabsorption cross and photoionization quantum yield of silane in the EUV region"" Proc. 7th symp. PLASMA PROCESSING, eds. I. Kato and R. Itatani. Tokyo. 249-252 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Ukai, K. Kameta, K. Shinsaka, Y. Hatano, T. Hirayama, S. Nagaoka, and K. Kimura: ""Photoionization of (O_2)_2, (O_2)_3, and Ar・O_2 in the 50-100 nm region : State selective ionization of O_2 in a framework of van der Waals molecules"" Chem. Phys. Lett. 167. 334-340 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Ukai, N. Kouchi, K. Kameta, R. Chiba, K. Nagano, K. Tanaka, and Y. Hatano: ""An attempt of fluorescence life time measurements using the pulse structure of Photon Factory"" Photon Factory Activity Report 1989, (National. Lab. for High Energy Physics). 278 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Kameta, M. Ukai, R. Chiba, K. Nagano, N. Kouchi, K. Tanaka, and Y. Hatano: ""Absolute measurements of photoabsorption cross section and photoionization quantum yield of SiH_^"" Photon Factory Activity Report 1989, (National. Lab. for High Energy Physics). 279 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Itikawa, A. Ichimura, K. Onda, K. Sakimoto, K. Takayanagi, Y. Hatano, and M. Hayashi, H. Nishimura, and S. Tsurubuchi: ""Cross sections for collisions of electrons and photons with oxygen molecules"" J. Phys. Chem. Ref. Data. 18. 23-42 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] E. Shigemasa, K. Ueda, Y. Sato, A. Yagishita, H. Maezawa, T. Sasakai, M. Ukai, and T. Hayaishi: ""Ionic fragmentation of SiH_^ following K-shell excitation"" Physica Scrpta. 41. 67-70 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Hatano: ""Report on the symposium 'CHEMICAL APPLICATIONS OF SYNCHROTRON RADIATION' in The 1989 International Chemical Congress of Pacific Basin Societies" (in Japanese)" J. Jpn. Soc. Synchrotron Radiat. Res. 3. 326-328 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Hatano: ""Synchrotron Radiation"" Radiat. Chem. 50. 40-45 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Kameta, M. Ukai, N. Terazawa, K. Nagano, Y. Chikahiro, N. Kouchi, K. Tanaka, and Y. Hatano: ""Absolute measurements of photoabsorption and photoionization cross sections of disilane in the EUV region"" Proc. 8th symp. PLASMA PROCESSING, ed. K. Tachibana, (Nagoya). 337-340 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Tanaka: ""Experimental applications of the pulse structure of synchrotron radiation" (in Japanese)" J. Jpn. Soc. Synchrotron Radiat. Res. 4. 29-35 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Ueda, E. Shigemasa, Y. Sato, A. Yagishita, M. Ukai, H. Maezawa, T. Hayaishi, and T. Sasaki: ""Threshold behavior of the multiplyーcharged-photoion yields near the Ar K-edge"" J. Phlys. B. 24. 605-613 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Ukai, R. Chiba, K. Kameta, K. Nagano, N. Kouchi, K. Shinsaka, H. Umemoto, Y. Ito, and Y. Hatano: ""The role of shape resonance in ionizing and nonーionizing decays of superexcited C_2H_2 in EUV region"" Photon Factory Activity Report 1990 (Natnl. Lab. for High Energy Physics). (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Kameta, M. Ukai, R. Chiba, K. Nagano, N. Kouchi, K. Tanaka, and Y. Hatano: ""Absolute measurements of photoabsorption cross sections, photoionization cross sections and photoionization quantum yields of silane and disilane in the 13-22 eV region"" Photon Factory Activity Report 1990 (Natnl. Lab. for High Energy Physics). (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Ukai, K. Kameta, K. Nagano, N. Kouchi, K. Tanaka, and Y. Hatano: ""Fluorescence excitation spectra excited by photodissociation and photoionization of CO_2"" Photon Factory Activity Report 1990 (Natnl. Lab. for High Energy Physics). (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Kouchi, N. Terazawa, M. Ukai, Y. Chikahiro, K. Kameta, K. Tanaka, and Y. Hatano: ""Angular momentum distribution measurement of excited hydrogen atoms produced in the photodessociation of H_2 by means of single bunch operation of PF ring"" Photon Factory Activity Report 1990 (Natnl. Lab. for High Energy Physics). (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Kameta, M. Ukai, R. Chiba, K. Nagano, N. Kouchi, Y. Hatano, and K. Tanaka: ""Absolute measurements of photoabsorption cross sections, photoionization cross sections and photoionization quantum yields of silane in the 13-22 eV region"" J. Chem. Phys.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Ukai, K. Kameta, R. Chiba, K. Nagano, N. Kouchi, K. Shisaka, Y. Hatano, H. Umemoto, Y. Ito, and K. Tanaka: ""Ionizing and nonーionizing decays of superexcited acetylene molecules in EUV region"" J. Chem. Phys.

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 1993-08-12  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi