Refine your search:     
Report No.
 - 
Search Results: Records 1-20 displayed on this page of 20
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Anomaly of structural relaxation in complex liquid metal of bismuth; Dynamic correlation function of coherent quasi-elastic neutron scattering

Kawakita, Yukinobu; Kikuchi, Tatsuya*; Inamura, Yasuhiro; Tahara, Shuta*; Maruyama, Kenji*; Hanashima, Takayasu*; Nakamura, Mitsutaka; Kiyanagi, Ryoji; Yamauchi, Yasuhiro*; Chiba, Kaori*; et al.

Physica B; Condensed Matter, 551, p.291 - 296, 2018/12

 Times Cited Count:9 Percentile:45.52(Physics, Condensed Matter)

There are elemental liquid metals with complex structures far from the hard sphere (HS) packing model. Liquid Bi has an asymmetric first peak in the structure factors S(Q). The pair distribution function g(r) exhibits strange distance ratio of 1:2 between the first and the second peaks. Since a HS model with two kinds of radius produces asymmetry of the main peak in S(Q), existence of short-lived covalent bonds was discussed. Contrarily, modulation of the atomic distribution by the Friedel oscillations of shielding electrons around metallic ions was discussed. To examine its bonding nature from viewpoints of dynamic correlation functions, we have measured neutron quasielastic scattering of liquid Bi by using cold disk chopper spectrometer installed at MLF of J-PARC. The van Hove function revealed that the shoulder structure located at a longer side of the first peak in g(r) exhibits a longer relaxation time than the main structures such as the first and second peaks.

Journal Articles

Imaging of carbon translocation to fruit using carbon-11-labeled carbon dioxide and positron emission tomography

Kawachi, Naoki; Kikuchi, Kaori*; Suzui, Nobuo; Ishii, Satomi; Fujimaki, Shu; Ishioka, Noriko; Watabe, Hiroshi*

IEEE Transactions on Nuclear Science, 58(2), p.395 - 399, 2011/04

 Times Cited Count:16 Percentile:77.51(Engineering, Electrical & Electronic)

Journal Articles

Imaging for carbon translocation to a fruit with $$^{11}$$CO$$_{2}$$ and positron emission tomography

Kawachi, Naoki; Kikuchi, Kaori*; Watabe, Hiroshi*; Suzui, Nobuo; Ishii, Satomi; Ishioka, Noriko; Fujimaki, Shu

JAEA-Review 2009-041, JAEA Takasaki Annual Report 2008, P. 101, 2009/12

Journal Articles

Analysis of translocation and distribution of photoassimilates in eggplant fruit in relation to positions of the source leaves using the positron-emitting tracer imaging system

Kikuchi, Kaori*; Kawachi, Naoki; Ishii, Satomi; Suzui, Nobuo; Ito, Sayuri; Ishioka, Noriko; Honda, Ichiro*; Fujimaki, Shu

JAEA-Review 2009-041, JAEA Takasaki Annual Report 2008, P. 105, 2009/12

Journal Articles

Molecular imaging for plant physiology; Imaging of carbon translocation to sink organs

Kawachi, Naoki; Suzui, Nobuo; Ishii, Satomi; Ito, Sayuri; Ishioka, Noriko; Kikuchi, Kaori*; Tsukamoto, Takashi*; Kusakawa, Tomoyuki*; Fujimaki, Shu

Proceedings of 2009 IEEE Nuclear Science Symposium and Medical Imaging Conference (2009 NSS/MIC) (CD-ROM), p.1257 - 1258, 2009/10

Journal Articles

Imaging for carbon translocation to a fruit of tomato with carbon-11-labeled carbon dioxide and positron emission tomography

Kawachi, Naoki; Kikuchi, Kaori*; Suzui, Nobuo; Ishii, Satomi; Fujimaki, Shu; Ishioka, Noriko; Watabe, Hiroshi*

Proceedings of 1st International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications (ANIMMA 2009) (USB Flash Drive), 5 Pages, 2009/06

Journal Articles

Visualization of photoassimilate translocation in eggplant fruit using $$^{11}$$CO$$_{2}$$ and a positron-emitting tracer imaging system

Kikuchi, Kaori*; Ishii, Satomi; Fujimaki, Shu; Suzui, Nobuo; Matsuhashi, Shimpei; Honda, Ichiro*; Kawachi, Naoki

JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 110, 2008/11

Journal Articles

Real-time analysis of photoassimilate translocation in intact eggplant fruit using $$^{11}$$CO$$_{2}$$ and a positron-emitting tracer imaging system

Kikuchi, Kaori*; Ishii, Satomi; Fujimaki, Shu; Suzui, Nobuo; Matsuhashi, Shimpei; Honda, Ichiro*; Shishido, Yoshihiro*; Kawachi, Naoki

Journal of the Japanese Society for Horticultural Science, 77(2), p.199 - 205, 2008/04

To clarify the mechanism of growth and development of the fruit of eggplant,$$^{11}$$CO$$_{2}$$was fed to a leaf and the translocation of $$^{11}$$C-labeled photoassimilate into the fruit was monitored by PETIS. Continuous images of the translocation of $$^{11}$$C-photoassimilate from the leaf to the fruit were successfully made, with a shorter time resolution than ever reported before. The PETIS images indicated that translocation of photoassimilate within the fruit was not uniform. The velocity of photoassimilate translocation in the peduncle and the changes in the rate of translocation of photoassimilate in the fruit were estimated by analysis of the PETIS data. The advantages of PETIS measurements in physiological studies of source sink relationships are discussed.

Oral presentation

Visualization of photoassimilate translocation in eggplant fruit using a positron-emitting tracer imaging system

Kikuchi, Kaori*; Ishii, Satomi; Suzui, Nobuo; Fujimaki, Shu; Matsuhashi, Shimpei; Kawachi, Naoki; Honda, Ichiro*

no journal, , 

no abstracts in English

Oral presentation

Analysis of photoassimilates translocation and distribution in eggplant fruit in relation to leaf position using a Positron-Emitting Tracer Imaging System (PETIS)

Kikuchi, Kaori*; Kawachi, Naoki; Ishii, Satomi; Suzui, Nobuo; Fujimaki, Shu; Honda, Ichiro*

no journal, , 

no abstracts in English

Oral presentation

Imaging of photoassimilate translocation into sink organs using positron emitting tracer imaging system

Kawachi, Naoki; Suzui, Nobuo; Ishii, Satomi; Ito, Sayuri; Ishioka, Noriko; Kikuchi, Kaori*; Tsukamoto, Takashi*; Kusakawa, Tomoyuki*; Fujimaki, Shu

no journal, , 

no abstracts in English

Oral presentation

Effect of photoperiod on photoassimilate translocation in eggplant

Kikuchi, Kaori*; Kawachi, Naoki; Ishii, Satomi; Suzui, Nobuo; Ito, Sayuri; Ishioka, Noriko; Honda, Ichiro*; Fujimaki, Shu

no journal, , 

no abstracts in English

Oral presentation

Analysis of translocation and distribution of photoassimilates in eggplant fruit in relation to position of the source leaves using the positron-emitting tracer imaging system

Kikuchi, Kaori*; Kawachi, Naoki; Ishii, Satomi; Suzui, Nobuo; Ishioka, Noriko; Ito, Sayuri; Honda, Ichiro*; Fujimaki, Shu

no journal, , 

no abstracts in English

Oral presentation

Three-dimensional imaging of carbon translocation to fruit with $$^{11}$$CO$$_{2}$$ and positron emission tomography

Kawachi, Naoki; Suzui, Nobuo; Ishii, Satomi; Ito, Sayuri; Ishioka, Noriko; Fujimaki, Shu; Kikuchi, Kaori*; Watabe, Hiroshi*

no journal, , 

no abstracts in English

Oral presentation

3-dimensional imaging for carbon translocation to a fruit of tomato with $$^{11}$$CO$$_{2}$$ and PET

Kawachi, Naoki; Suzui, Nobuo; Ishii, Satomi; Ito, Sayuri; Ishioka, Noriko; Fujimaki, Shu; Kikuchi, Kaori*; Watabe, Hiroshi*

no journal, , 

no abstracts in English

Oral presentation

Visualizations of photoassimilate translocation in intact eggplant fruit using a positron-emitting tracer imaging system

Kikuchi, Kaori*; Kawachi, Naoki; Ishii, Satomi; Suzui, Nobuo; Ito, Sayuri; Ishioka, Noriko; Honda, Ichiro*; Fujimaki, Shu

no journal, , 

Oral presentation

Analysis of translocation and distribution of photoassimilates in eggplant fruit using a positron-emitting tracer imaging system

Kikuchi, Kaori*; Ishii, Satomi; Kawachi, Naoki; Suzui, Nobuo; Fujimaki, Shu

no journal, , 

Oral presentation

Time-space correlation function of liquid metals with complex static structure deduced from pulsed neutron experiment

Kawakita, Yukinobu; Kikuchi, Tatsuya*; Inamura, Yasuhiro; Tahara, Shuta*; Maruyama, Kenji*; Hanashima, Takayasu*; Nakamura, Mitsutaka; Kiyanagi, Ryoji; Yamauchi, Yasuhiro*; Chiba, Kaori*; et al.

no journal, , 

There are many polyvalent liquid metals with complex structure which cannot be reproduced by random packing model. To explain such complexity, coexistence of metallic and covalent bonds, dynamic model of short-lived covalent bonds, and quasi-crystal model where Peierls distortion still remains even in liquid phase have been proposed from structure analyses and theoretical calculations. To obtain concrete picture experimentally for complex structure, it is indispensable to measure dynamic structure with precise statistical accuracy. We performed inelastic neutron scattering of liquid bismuth by using AMATERAS installed at MLF in J-PARC and deduced its time-space correlation function. We got evidence that structure of Peierls distortion remains even in liquid by evaluating difference in relaxation time at specific atomic distances characterized by double layered structure.

Oral presentation

Structural relaxation and time-space correlation function of liquid metals with complex structure

Kawakita, Yukinobu; Kikuchi, Tatsuya*; Inamura, Yasuhiro; Tahara, Shuta*; Maruyama, Kenji*; Hanashima, Takayasu*; Nakamura, Mitsutaka; Kiyanagi, Ryoji; Yamauchi, Yasuhiro*; Chiba, Kaori*; et al.

no journal, , 

We have performed coherent quasielastic neutron scattering experiment for liquid polyvalent metals which has complicated static structure not reproduced by a hard-sphere packing model, by utilizing AMATERAS spectrometer in J-PARC. It has been considered that, for Bi and Sb, a double-layered structure originated from Peierls distortion which is seen in solid crystalline phase remains even in their liquid phases. We have succeeded in detection of such Peierls distortion structure in liquid by difference in structural relaxation time at corresponding charateristic interatomic distances in the deduced time-space correlation function.

Oral presentation

Real time and real space analysis for atomic dynamics in liquids

Kawakita, Yukinobu; Kikuchi, Tatsuya*; Inamura, Yasuhiro; Tahara, Shuta*; Maruyama, Kenji*; Hanashima, Takayasu*; Nakamura, Mitsutaka; Kiyanagi, Ryoji; Yamauchi, Yasuhiro*; Chiba, Kaori*; et al.

no journal, , 

We have developed analysis method to reduce the so-call van Hove function, a time-space correlation function, through the regularization method for coherent quasielastic neutron scattering (QENS) of liquids. In principle, the van Hove function in r-t space can be obtained by double Fourier transform from dynamic structure factor in Q-E space. Instead of a direct function estimation of the van Hove function through the regularization method which easily involves systematical deviation of the calculated dynamic structure factor from the experimental dynamic structure factor, we used a mediation function between them and estimated it through the regularization method. We will discuss with the properties of the mediation function and the obtained van Hove function and the calculated dynamic structure factor with an example of liquid metals with complex static structure such as Bi and Sb whose QENS were measured by AMATERAS spectrometer in J-PARC.

20 (Records 1-20 displayed on this page)
  • 1