排序方式: 共有7条查询结果,搜索用时 0 毫秒
1
1.
Bockhorst M. Burbach G. Burgwinkel R. Empt J. Guse B. Guse B. Haas K. -M. Hannappel J. Heinloth K. Hey T. Hoffmann-Rothe P. Honscheid K. Jahnen T. Jakob H. P. Jöpen N. Jüngst H. Kirch U. Klein F. -J. Kostrewa D. Lindemann L. Link J. Manns J. Menze D. Merkel H. Merkel R. Neuerburg W. Paul E. Plötzke R. Schenk U. Schmidt S. Scholmann J. Schütz P. Schultz-Coulon H. -C. Schweitzer M. Schwille W. J. Tran M. -Q. Umlauf G. Vogl W. Wedemeyer R. Wehnes F. Wißkirchen J. Wolf A. 《Zeitschrift fur Physik C Particles and Fields》1994,63(1):37-47
The reactions pK
+ and pK
+ 0 have been measured with the multiparticle detector system SAPHIR at ELSA in Bonn. Besides the differential cross sections the polarization and, for the first time, the 0 polarization have been determined in a photon induced reaction. All data are presented as functions of the photon energy (from threshold up to 1.47 GeV) and of the kaon production angle (0°–180°). The polarization of both and 0 is substantial at all energies and varies strongly with the production angle.This work is supported by the Bundesminister für Forschung und Technologie (BMFT), FK 06 BN 621 I 相似文献
2.
C. Wu J. Barth W. Braun J. Ernst K. -H. Glander J. Hannappel N. Jöpen H. Kalinowsky F. J. Klein F. Klein E. Klempt R. Lawall J. Link D. Menze W. Neuerburg M. Ostrick E. Paul H. van Pee I. Schulday W. J. Schwille B. Wiegers F. W. Wieland J. Wißkirchen 《The European Physical Journal A - Hadrons and Nuclei》2005,23(2):317-344
3.
R Ramírez N Neuerburg MV Fernández-Serra CP Herrero 《The Journal of chemical physics》2012,137(4):044502
Several thermodynamic properties of ice Ih, II, and III are studied by a quasi-harmonic approximation and compared to results of quantum path integral and classical simulations. This approximation allows to obtain thermodynamic information at a fraction of the computational cost of standard simulation methods, and at the same time permits studying quantum effects related to zero-point vibrations of the atoms. Specifically, we have studied the crystal volume, bulk modulus, kinetic energy, enthalpy, and heat capacity of the three ice phases as a function of temperature and pressure. The flexible q-TIP4P/F model of water was employed for this study, although the results concerning the capability of the quasi-harmonic approximation are expected to be valid independently of the employed water model. The quasi-harmonic approximation reproduces with reasonable accuracy the results of quantum and classical simulations showing an improved agreement at low temperatures (T< 100 K). This agreement does not deteriorate as a function of pressure as long as it is not too close to the limit of mechanical stability of the ice phases. 相似文献
4.
J. Barth W. Braun J. Ernst K.-H. Glander J. Hannappel N. Jöpen H. Kalinowsky F. J. Klein F. Klein E. Klempt R. Lawall J. Link D. Menze W. Neuerburg M. Ostrick E. Paul H. van Pee I. Schulday W. J. Schwille B. Wiegers F. W. Wieland J. Wißkirchen C. Wu 《The European Physical Journal A - Hadrons and Nuclei》2003,18(1):117-127
The photoproduction of the vector meson
has been studied between threshold and W = 2.4 GeV with the SAPHIR detector at the Bonn electron stretcher ring ELSA. Besides, the total cross-sections angular distributions in the CMS and decay angular distributions in the helicity and Gottfried-Jackson systems have been measured.Received: 26 February 2003, Revised: 20 May 2003, Published online: 9 October 2003PACS:
14.40.Cs Properties of specific particles: Other mesons with S = C = 0, mass < 2.5 GeVJ. Barth: Part of doctoral thesis [1].W. Braun: No longer working at this experiment. 相似文献
5.
6.
J. Barth W. Braun J. Ernst K.-H. Glander J. Hannappel N. Jöpen F.J. Klein F. Klein H. Kalinowsky E. Klempt R. Lawall J. Link D. Menze W. Neuerburg M. Ostrick E. Paul H. van Pee I. Schulday W.J. Schwille B. Wiegers F.W. Wieland J. Wißkirchen C. Wu 《The European Physical Journal A - Hadrons and Nuclei》2003,17(2):269-274
Photoproduction of Φ-vector-mesons has been studied from reaction threshold up to W = 2.4 GeV with the SAPHIR spectrometer at the Bonn electron stretcher ring ELSA. Total cross-sections, differential cross-sections
and decay angular distributions were measured. We find evidence for strong non-diffractive contributions to Φ photoproduction.
Received: 12 December 2002 / Accepted: 13 March 2003 / Published online: 20 May 2003 相似文献
7.
Kent M. Neuerburg 《代数通讯》2013,41(4):1809-1820
We compute the primary decomposition of certain ideals generated by subsets of minors in a generic matrix or in a generic symmetric matrix, or subsets of Pfaffians in a generic skew-symmetric matrix. Specifically, the ideals we consider are generated by minors that have at least some given number of rows and columns in certain submatrices. 相似文献
1