Eur. Phys. J. A (2007) 33: 39-46
https://doi.org/10.1140/epja/i2007-10411-9

Regular Article - Nuclear Structure and Reactions

Analyzing powers A_yy , A_xx , A_xz and A_y in the dd → ³Hen reaction at 270 MeV

¹ VBLHE-JINR, 141980 Dubna, Moscow region, Russia
² University of P.J. Šafárik, 041-54, Košice, Slovakia
³ Department of Physics, University of Tokyo, 113-0033, Bunkyo, Tokyo, Japan
⁴ Center for Nuclear Study, University of Tokyo, 113-0033, Bunkyo, Tokyo, Japan
⁵ Department of Physics, Saitama University, 338-8570, Urawa, Japan
⁶ RIKEN, Wako, 351-0198, Saitama, Japan
⁷ CYRIC, Tohoku University, 980-8578, Sendai, Miyagi, Japan
⁸ Research Center for Nuclear Physics, Osaka University, 567-0047, Ibaraki, Japan

Received: 14 February 2007
Accepted: 25 June 2007
Published online: 24 July 2007

Abstract

The data on the tensor A_yy, A_xx, A_xz and vector A_y analyzing powers in the dd → ^3Hen obtained at T _d = 270 MeV in the angular range 0^° - 110^° in the c.m. are presented. The observed negative sign of the tensor analyzing powers A_yy, A_xx and A_xz at small angles clearly demonstrate the sensitivity to the ratio of the D - and S -wave component of the ³He wave function. However, the one-nucleon exchange calculations by using the standard ³He wave functions have failed to reproduce the strong variation of the tensor analyzing powers as a function of the angle in the c.m.