S. Sakoda

Analyzing powers Ayy , Axx , Axz and Ay in the dd → 3Hen reaction at 270 MeV

The data on the tensor Ayy, Axx, Axz and vector Ay analyzing powers in the dd → Hen obtained at Td = 270 MeV in the angular range 0 ◦ – 110◦ in the c.m. are presented. The observed negative sign of the tensor analyzing powers Ayy, Axx and Axz at small angles clearly demonstrate the sensitivity to the ratio of the D and S wave component of the He wave function. However, the one-nucleon exchange calculations by using the standard He wave functions have failed to reproduce the strong variation of the tensor analyzing powers as a function of the angle in the c.m. PACS. 24.70.+s Polarization phenomena in reactions – 25.10.+s Nuclear reactions involving few-nucleon system – 21.45.+v Few-body systems

Measurement of the tensor analyzing power T20 in the dd→He3n and dd→H3p at intermediate energies and at zero degree

The data on the tensor analyzing power T20 in the dd->^3Hen and dd->^3Hp reactions at 140, 200 and 270 MeV of the deuteron kinetic energy and at zero degree obtained at RIKEN Accelerator Research Facility are presented. The observed positive sign of T20 clearly demonstrates the sensitivity to the D/S wave ratios in the ^3He and ^3H in the energy domain of the measurements. The T20 data for the ^3He-n and ^3H-p channels are in agreement within experimental accuracy.

\({}^3\overrightarrow {{\rm{He}}} {\rm{ (}}\vec d,p{)^4}{\rm{He}}\) Reaction at Intermediate Energies

We have measured the cross sections and the polarization observables for the 3He(d,p)4He reaction at E d =140, 200, and 270 MeV. This work aims to investigate the high momentum component of deuteron D-state wave function and the mechanism for the one-nucleon transfer reaction at intermediate energies. The measurement was carried out by using the spectrograph SMART at RIKEN Accelerator Research Facility. A cryogenic 3He gas target with a density of 6.6×1020 cm−3 was bombarded by a polarized deuteron beam. The data are compared with the calculation based on the one-nucleon exchange approximation.

Reaction mechanism and characteristics ofT20ind+3Hebackward elastic scattering at intermediate energies

For backward elastic scattering of deuterons by ^3He, cross sections \sigma and tensor analyzing power T_{20} are measured at E_d=140-270 MeV. The data are analyzed by the PWIA and by the general formula which includes virtual excitations of other channels, with the assumption of the proton transfer from ^3He to the deuteron. Using ^3He wave functions calculated by the Faddeev equation, the PWIA describes global features of the experimental data, while the virtual excitation effects are important for quantitative fits to the T_{20} data. Theoretical predictions on T_{20}, K_y^y (polarization transfer coefficient) and C_{yy} (spin correlation coefficient) are provided up to GeV energies.

Angular distributions of the vector A y and tensor A y y , A x x , A x z analyzing powers in the d ⃗ d → 3 H p reaction at 200 MeV

A complete set of analyzing powers for the

THE ANGULAR DISTRIBUTIONS OF THE VECTOR Ay AND TENSOR Ayy, Axx, Axz ANALYZING POWERS IN THE dd → 3Hp AND dd → 3Hen REACTIONS AT Ed = 200 AND 270 MeV

\stackrel{P\vec}{d}d\ensuremath{\rightarrow}{}^{3}\text{H}p

A Model for the Reaction at Intermediate Energies

reaction at the kinetic beam energy of 200 MeV has been measured in the full angular range in the c.m. frame. The observed signs of the tensor analyzing powers

Vector analyzing power Ay and tensor analyzing powers Ayy, Axx, and Axz in the reaction \vec dd → 3Hp at the energy of 200 MeV

{A}_{yy}

Status of the investigation of the spin structure of d, 3H, and 3He at VBLHE using polarized and unpolarized deuteron beam

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Tensor analyzing power T20 of the dd → 3Hen and dd → 3Hp reactions at zero angle for energies 140, 200, and 270 MeV

{A}_{xx}