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本文在华中一等计算四极场的结果上,对常用的圆棍四极的中心区域再次应用有限单元法,加密工作单元,求得离散的电位和电场分布。然后不用通常的解析形式,而直接利用离散电场,数值求解离子运动微分方程。把相空间动力学推广应用于这种非理想双曲场——圆棍四极场,得到了与以前不同的离子运动稳定图。初步表明,由于圆棍四极的三角稳定图的尖点出现平坦,三角形的增大以及工作的偏移,将限制分析仪器的分辨能力,改变离子的运动特性。
In the first-order calculation of the quadrupole field in Huazhong, the finite element method is applied to the central area of the commonly used quadrupole quadrupole to encrypt the unit of work and obtain the discrete potential and electric field distribution. Then, instead of using the usual analytical form, the discrete electric field can be directly used to numerically solve the differential equations of motion of ions. The phase space dynamics is applied to this non-ideal hyperbolic field - round quadrupole field, obtained with the previous different ionic motion stability diagram. Preliminary results show that due to the flattening of the cusps of the triangular stability diagram of the quadrupole, the increase of the triangle and the offset of the work will limit the resolving power of the analytical instrument and change the movement characteristics of the ions.