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B. Ramstein C. Mosbacher T. Hennino W. Augustyniak D. Bachelier H.G. Bohlen J.L. Boyard R. Dahl C. Ellegaard C. Gaarde J. Gosset J.C. Jourdain J.S. Larsen M.C. Lemaire D. L'Hôte H.P. Morsch M. Österlund J. Poitou P. Radvanyi M. Roy-Stephan T. Sams M. Skousen S. Tarlé-Rousteau P. Zupranski 《The European Physical Journal A - Hadrons and Nuclei》2003,16(4):583-597
The exclusive 2H( 3He, t)2p reaction has been studied at 2 GeV for energy transfers up to 500 MeV and triton angles up to 3.4°. The protons were measured in the large acceptance magnetic detector DIOGENE, in coincidence with the forward tritons detected
in a dedicated magnetic arm. The energy transfer spectra extend well above the pion threshold. However, in the region of Δ
excitation, the yield is less than 10% of the inclusive 2H( 3He, t) cross-section, which indicates the small contribution of the ΔN ↦ NN process. The angular distributions of the two
protons in their center of mass have been analysed as a function of energy transfer and triton angle and a Legendre polynomial
decomposition has been achieved. These data have been compared to a model based on a coupled-channel approach for describing
the NN and NΔ systems.
Received: 21 October 2002 / Accepted: 15 November 2002 / Published online: 11 March 2003
RID="a"
ID="a"e-mail: ramstein@ipno.in2p3.fr
RID="†"
ID="†"Deceased.
RID="†"
ID="†"Deceased.
RID="d"
ID="d"Present adress: School of Engineering, J?nk?ping University, P.O. Box 1026, S-551 11 J?nk?ping, Sweden.
Communicated by M. Gar?on 相似文献
45.
The infrared spectrum of nitrous oxide has been measured and analyzed from 2265 cm?1 to 2615 cm?1. Newly refined effective rotational constants for twenty-one vibrational states of 14N2O, three vibrational states each of 14N218O and 15N14N16O, two states of 14N15N16O and one state of 14N217O have been calculated.The most interesting features observed are two Δ-Σ “forbidden” bands, 042c0-0000 and 122c0-0000. These bands occur because of Coriolis interaction between unperturbed vibrational states having l = 0 and l = 2. 相似文献
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The 10010000 band of CS2 has been measured with a resolution of 0.030 cm?1. The following “hot” bands associated with this transition were also measured and analyzed: 11110110, 12010200, 12210220, 13310330, 20011000, 30012000, 21111110, and 22011200. In addition, the 10010000 bands of the isotopic species 13C32S2, 12C32S33S, and 12C32S34S were measured in natural abundance. With the results of these measurements it is shown that the 02011200 transitions do indeed coincide with the CS2 laser transitions, as do the 00011000 transitions. New arguments are given favoring the latter assignment. 相似文献
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本文研究了俘获于掺杂VO++离子的(NH4)2Zn(SO4)2·6H2O单晶中NH3+自由基离子的ESR.从实验上分别测出π电子自由基NH3+的14N和15N核超精细分裂.结果表明,氮核超精细偶合张量具有近似于圆柱形对称。对于15N来说,A11=44.8,A22=19.3,A33=17.8高斯.对于14N来说,A11=31.1,A22=12.5,A33=11.8高斯.在室温下,NH3+自由基绕A11方向作圆锥体运动.文中最后讨论了NH3+自由基离子的可能生成机理。 相似文献
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Auslender, Cominetti and Haddou have studied, in the convex case, a new family of penalty/barrier functions. In this paper, we analyze the asymptotic behavior of augmented penalty algorithms using those penalty functions under the usual second order sufficient optimality conditions, and present order of convergence results (superlinear convergence with order of convergence 4/3). Those results are related to the analysis of pure penalty algorithms, as well as augmented penalty using a quadratic penalty function. Limited numerical examples are presented to appreciate the practical impact of this local asymptotic analysis.This research was partially supported by NSERC grant OGP0005491 相似文献
50.
We introduce the set of bicomplex numbers
which is a commutative ring with zero divisors defined by
where
We present the conjugates and the moduli associated with the bicomplex numbers. Then we study the bicomplex Schr?dinger equation
and found the continuity equations. The discrete symmetries of the system of equations describing the bicomplex Schr?dinger
equation are obtained. Finally, we study the bicomplex Born formulas under the discrete symmetries. We obtain the standard
Born’s formula for the class of bicomplex wave functions having a null hyperbolic angle. 相似文献