Tensor-Polarized-Deuteron Capture on Deuterium and the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>D</mi></math></span> State of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">He</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>4</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span>

H. R. Weller; P. Colby; N. R. Roberson; D. R. Tilley

doi:10.1103/PhysRevLett.53.1325

Tensor-Polarized-Deuteron Capture on Deuterium and the $D$ State of ${}^{4}{He}$

H. R. Weller, P. Colby, N. R. Roberson, and D. R. Tilley

Phys. Rev. Lett. 53, 1325 – Published 1 October 1984

Abstract

The tensor analyzing power $T_{20} (θ)$ of the reaction ${}^{2}H (d, γ) {}^{4}{He}$ has been measured at six angles at $E_{d} = 9.7$ MeV. The result is found to be isotropic with a value of $T_{20} = - 0.22 \pm 0.014$ . This analyzing power arises from the interference of $S = 0$ and $S = 2$ capture amplitudes. Since the reaction proceeds predominantly via $E 2$ radiation, the $S = 2$ capture strength can be attributed to $S = 2$ , $L = 2$ ground-state admixtures. A heuristic model calculation has been used to show that a 4.8% $D$ -state admixture in the two-deuteron wave function describing ${}^{4}{He}$ can account for the observed $T_{20}$ .

Received 25 June 1984

DOI:https://doi.org/10.1103/PhysRevLett.53.1325

Authors & Affiliations

H. R. Weller, P. Colby, and N. R. Roberson

Duke University, Durham, North Carolina 27706, and Triangle Universities Nuclear Laboratory, Duke Station, Durham, North Carolina 27706

D. R. Tilley

North Carolina State University, Raleigh, North Carolina 27607, and Triangle Universities Nuclear Laboratory, Duke Station, Durham, North Carolina 27706