Author/Authors :
Noji، نويسنده , , S. and Miki، نويسنده , , K. and Yako، نويسنده , , K. and Kawabata، نويسنده , , T. and Kuboki، نويسنده , , H. K. Sakai، نويسنده , , H. Ikeura-Sekiguchi، نويسنده , , K. and Suda، نويسنده , , K.، نويسنده ,
Abstract :
The neutron polarimeter SMART-NPOL has been constructed at the RIKEN Accelerator Research Facility for measuring polarization correlations of proton–neutron systems. The SMART-NPOL system consists of 12 parallel neutron counter planes of two dimensionally position-sensitive plastic scintillators with a size of 60 × 60 × 3.0 cm 3 . Polarimetry measurements were made using the analyzing power of the H 1 ( n ⇒ , n ) H 1 reaction occurring in the plastic scintillators. The effective analyzing power of SMART-NPOL was measured with polarized neutrons from the zero-degree Li 6 ( d ⇒ , n ⇒ ) reaction with an incident deuteron energy of 135 MeV / A . The effective analyzing power thus obtained was 0.26 ± 0 . 01 stat ± 0 . 03 syst and the double scattering efficiency was 1.1 × 10 - 3 .
