Measurement of Proton-Proton Bremsstrahlung at 389 MeV

K. Yasuda; H. Akiyoshi; T. Hotta; K. Imai; M. Kato; M. Kawabata; Y. Maeda; N. Matsuoka; T. Matsuzuka; Y. Mizuno; T. Murakami; J. Murata; I. Nakagawa; M. Nomachi; T. Noro; Y. Sugaya; K. Takahisa; T. Tamae; K. Tamura; H. Tsubota; Y. Yokota; H. P. Yoshida; M. Yoshimura; Y. Yuasa

doi:10.1103/PhysRevLett.82.4775

Measurement of Proton-Proton Bremsstrahlung at 389 MeV

K. Yasuda, H. Akiyoshi, T. Hotta, K. Imai, M. Kato, M. Kawabata, Y. Maeda, N. Matsuoka, T. Matsuzuka, Y. Mizuno, T. Murakami, J. Murata, I. Nakagawa, M. Nomachi, T. Noro, Y. Sugaya, K. Takahisa, T. Tamae, K. Tamura, H. Tsubota, Y. Yokota, H. P. Yoshida, M. Yoshimura, and Y. Yuasa

Phys. Rev. Lett. 82, 4775 – Published 14 June 1999

Abstract

Proton-proton bremsstrahlung cross sections have been measured at 389 MeV incident energy. A two-arm spectrometer and a liquid hydrogen target system have been used to measure the proton-proton bremsstrahlung events with small background. At the present kinematical conditions, an enhancement of the cross sections due to the $Δ$ current contribution is predicted. The measured cross sections are larger than the theoretical predictions including the $Δ$ current contribution.

Received 16 December 1998

DOI:https://doi.org/10.1103/PhysRevLett.82.4775

Authors & Affiliations

K. Yasuda¹, H. Akiyoshi⁵, T. Hotta¹, K. Imai², M. Kato¹, M. Kawabata^1,*, Y. Maeda¹, N. Matsuoka¹, T. Matsuzuka¹, Y. Mizuno¹, T. Murakami², J. Murata², I. Nakagawa³, M. Nomachi¹, T. Noro¹, Y. Sugaya¹, K. Takahisa¹, T. Tamae³, K. Tamura^1,†, H. Tsubota⁴, Y. Yokota¹, H. P. Yoshida¹, M. Yoshimura¹, and Y. Yuasa¹

¹Research Center for Nuclear Physics, Osaka University, Ibaraki 567-0047, Japan
²Department of Physics, Kyoto University, Kyoto 606-8502, Japan
³Laboratory of Nuclear Science, Tohoku University, Sendai 982-0826, Japan
⁴Department of Physics, Tohoku University, Sendai 980-8578, Japan
⁵RIKEN, Institute of Physics and Chemical Research, Wako 351-0106, Japan

^*Present address: Laboratory of Nuclear Science, Tohoku University, Sendai, 982-0826 Japan.
^†Present address: Fukui Medical University, Fukui, 910-1104 Japan.