Tensor Target Polarization at TRIUMF

1st Tensor Polarized Solid Target Workshop

Smith, G.^1

Jefferson Lab, 12000 Jefferson Ave., Newport News

VA

23606, United States^1

关键词: Analyzing power;    Direct measurement;    Measurements of;    Model independent;    NMR spectrum;    NMR techniques;    Target polarization;    Tensor polarization;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/543/1/012014/pdf
DOI  :  10.1088/1742-6596/543/1/012014

来源: IOP

【 摘 要 】

The first measurements of tensor observables in π scattering experiments were performed in the mid-80's at TRIUMF, and later at SIN/PSI. The full suite of tensor observables accessible in π elastic scattering were measured: T20, T21, and T22. The vector analyzing power iT11was also measured. These results led to a better understanding of the three-body theory used to describe this reaction. A direct measurement of the target tensor polarization was also made independent of the usual NMR techniques by exploiting the (nearly) model-independent result for the tensor analyzing power at 90°cmin the π → 2p reaction. This method was also used to check efforts to enhance the tensor polarization by RF burning of the NMR spectrum. A brief description of the methods developed to measure and analyze these experiments is provided.