TWO-NUCLEON ABSORPTION MECHANISM AND PIONS IN FIGHT

CHUNG HUAN-CHING; LI YANG-GUO

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2024年10月30日

Chinese Physics C> 1982, Vol. 6> Issue(6) : 721-731

TWO-NUCLEON ABSORPTION MECHANISM AND PIONS IN FIGHT

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Abstract：
In this paper, a two-nucleon absorption model for pions at rest is extended todiscuss the nucleon spectra after absorption of pions of a few nundred MeV energies.Nucleon spectra emitted afte 220 MeV pion absorption by ¹²C, ⁵⁸Ni and ¹⁸¹Ta are cal-culated. The A dependences of the absorption cross section, the mean number ofnucleons N emitted after pion absorption and the ratio of the yields of protons from π⁺ v.s. π absorption can be well described by two-nucleon mechanism.

References

[1]

D. S. Koltun, Adv. Nucl. Phys., 3(1969), 71. J. Hüfner, Phys. Reports, 21C(1975), 1. T.I.Kopaleiahvili, Particles and Nuclei, Vol. 2, Part2(1973), 87. H. K. Walter, Proceed. 7th International conference on High Energy Phyeice and cture, Zürich 1977, p. 225. J. P. Scheffer, Proceed. 8th International conference on high Energy Phyeies and Nuclear Stru-eture. Nucl. Phys. A335(1980). 33.[2] R. D. MeKeown et al., Phys.Rev. Lett., 44(1980), 1033, 45(1980), 2015. R.E. Jackson et al., Phys.Rev. Lett., 39(1977), 1601.[3] H. C. Ghiang and J. Hüfner, Nucl.Phys., A352(1980), 442. J. Hufner and H. C. Chiang, Proceed. International Workshop on Intermediate Energy Nncl. Chemiatry, Loa Alamos, 1981, p. 73.[4] F. Haehenbeig, H. C. Chiang and J. Hüfner, Phys. Lett, B97(1980), 183.[5] I. Navon et al., Phys. Rev. Lett., 42(1979), 1465. H. E. Jackson et al., Phys. Rev.C16(1977), 730.[6] C.M.Ko and S. Bohrmann, Phys. Lett., B97(1980), 188.[7] K. G. Doss et al., Phys. Rev., C22(1980), 1219.[8] H. C. Chiang and J. Hüfner, Nucl. Phys., A3t9(1980), 466.[9] H. R. Cbllard et aL, Numerical Data and Functional Relationships in Science and Technology,v2(1967), 34.[10] E. J. Moniz et al., Phys. Rev. Lett., 26(1971), 445.[11] J. Hüfner and M. Thies, Phys. Rev., C20(1979), 20.[12] 姜焕清, 李扬国, 科学通报, 26(1981),1290.

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CHUNG HUAN-CHING and LI YANG-GUO. TWO-NUCLEON ABSORPTION MECHANISM AND PIONS IN FIGHT[J]. Chinese Physics C, 1982, 6(6): 721-731.

CHUNG HUAN-CHING and LI YANG-GUO. TWO-NUCLEON ABSORPTION MECHANISM AND PIONS IN FIGHT[J]. Chinese Physics C, 1982, 6(6): 721-731. shu

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Received: 1981-05-20
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

TWO-NUCLEON ABSORPTION MECHANISM AND PIONS IN FIGHT

CHUNG HUAN-CHING
LI YANG-GUO

Received Date: 1981-05-20
Accepted Date: 1900-01-01
Available Online: 1982-12-05

Abstract: In this paper, a two-nucleon absorption model for pions at rest is extended todiscuss the nucleon spectra after absorption of pions of a few nundred MeV energies.Nucleon spectra emitted afte 220 MeV pion absorption by ¹²C, ⁵⁸Ni and ¹⁸¹Ta are cal-culated. The A dependences of the absorption cross section, the mean number ofnucleons N emitted after pion absorption and the ratio of the yields of protons from π⁺ v.s. π absorption can be well described by two-nucleon mechanism.