Near-threshold production of antihydrogen positive ion in positronium?antihydrogen collision
Near-threshold production of antihydrogen positive ion in positronium?antihydrogen collision
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正电子素-反氢碰撞中近阈值产生反氢正离子
DOI：
10.1088/1367-2630/abd682
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发表时间：
2021
影响因子：
3.3
通讯作者：
Froelich Piotr
中科院分区：
文献类型：
--
作者：
Yamashita Takuma;Kino Yasushi;Hiyama Emiko;Jonsell Svante;Froelich Piotr
通过严格的四体散射计算，预测了正电子-反氢碰撞中反氢离子(H+)的近阈值产生。对于重排和所有竞争反应(弹性散射、正电子素的去激发和去极化)的截面的收敛被仔细地对照部分波进行了检查。多通道散射解由对角化四体哈密顿量的函数和满足正确渐近边界条件的散射函数组成。与更接近的计算相比，H+的产生率显示出很大的差异。
Near-threshold production of antihydrogen ion (H+) in positronium–antihydrogen collisions is predicted by a rigorous four-body scattering calculation. The convergence of the cross sections for the rearrangement and for all competing reactions (elastic scattering, de/excitation and de/polarization of positronium) is carefully examined against partial waves. The multi-channel scattering solutions are composed of functions that diagonalize the four-body Hamiltonian, and scattering functions that satisfy the correct asymptotic boundary conditions. The production rates of H+ show large discrepancies compared to more approximate calculations.