Abstract
Nonadiabatically coupled equations in terms of hyperspherical coordinates are solved for the elastic and hyperfine transitions F→F′ of muonic hydrogen isotopes pμ, dμ, and tμ in collisions pμ(F)+p→p+μp(F′), dμ(F)+d→d+μd(F′), and tμ(F)+t→t+μt(F′), as an extension of our previous work on pμ [Igarashi et al., Phys. Rev. A 58 (1998), 1166]. Converged cross sections are obtained for collision energies 10−3 to 102 eV and for the total orbital angular momentum L=0 and 1 including the spin–spin interactions V S explicitly in the Hamiltonian, and for L≥2 neglecting V S because of the large interparticle separations. The inclusion of V S for L=0 and 1 reproduces the correct hyperfine-splitting energy Δ∈ in the separated-atom limit, and is found to be of vital importance for the calculation of the spin-flip cross sections for collision energies lower than Δ∈.
Similar content being viewed by others
References
Bracci, L. et al., Muon Cat. Fusion 4 (1989), 247; Phys. Lett. A 134 (1989), 435; Cohen, J. S., Phys. Rev. A 43 (1991), 4668; Hu, C. Y. et al., J. Phys. B 28 (1995), 3629.
Igarashi, A., Shimamura, I. and Toshima, N., Phys. Rev. A 58 (1998), 1166.
Petitjean, C. et al., Hyp. Interact. 118 (1999), 127.
Lauss, B. et al., Hyp. Interact. 118 (1999), 79.
Baumann, P. et al., Phys. Rev. Lett. 70 (1993), 3720; Ackerbauer, P. et al., Nucl. Phys. A 652 (1999), 311.
Voropaev, N. I. et al., Hyp. Interact. 118 (1999), 135; Hyp. Interact., this issue and references therein.
Men'shikov, L. I. et al., Sov. Phys. JETP 65 (1987), 656.
Adamczak, A. et al., At. Data Nucl. Data Tables 62 (1996), 255.
Tang, J.-Z., Watanabe, S. and Matsuzawa, M., Phys. Rev. A 46 (1992), 2437; Tang,J.-Z. and Shimamura, I., Phys. Rev. A 50 (1994), 1321; 51 (1995), R1738; 52 (1995), R3413.
Igarashi, A. and Toshima, N., Phys. Rev. A 50 (1994), 232; Igarashi,A., Toshima, N. and Shirai, T., ibid. 50 (1994), 4951; Igarashi, A. and Shimamura, I., Phys. Rev. A 56 (1997), 4733; Igarashi, A., Shimamura, I. and Toshima, N., New J. Phys. 2 (2000), 17.1.
Abramov, D. I., Gusev, V. V. and Ponomarev, L. I., Hyp. Interact., this issue.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Igarashi, A., Faifman, M.P. & Shimamura, I. Nonadiabatically Coupled Hyperspherical Equations Applied to the Collisional Spin Flip of Muonic Hydrogen. Hyperfine Interactions 138, 77–83 (2001). https://doi.org/10.1023/A:1020894616054
Issue Date:
DOI: https://doi.org/10.1023/A:1020894616054