Abstract
Trinucleon molecular structures in 6He and 6Be were investigated by using the 6Li(7Li, 7Be)6He reaction at 455 MeV and 6Li(3He, t)6Be reaction at 450 MeV, respectively. Binary decays into t + t from a broad state at E x =18.0±1.0 MeV in 6He and into 3He + 3He from one at E x =18.0±1.2 MeV in 6Be, respectively, were observed by measuring trinucleon cluster decays in coincidence with reaction particles. The branching ratios for binary decay were estimated to be about 0.7 for 6He and 6Be. These large branching ratios show that a trinucleon cluster state exists as an isobaric partner around E x =18 MeV in 6He and 6Be.
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References
Y. M. Shin et al., Phys. Lett. B 55B, 297 (1975).
M. F. Werby et al., Phys. Rev. C 8, 106 (1973).
D. R. Thompson and Y. C. Tang, Nucl. Phys. A 106, 591 (1968).
S. L. Blatt et al., Phys. Rev. 176, 1147 (1968).
E. Ventura et al., Phys. Lett. B 46B, 364 (1973); Nucl. Phys. A 173, 1 (1971), and references therein.
E. Ventura et al., Nucl. Phys. A 219, 157 (1974).
R. Vlastou et al., Nucl. Phys. A 292, 29 (1977).
R. Vlastou et al., Nucl. Phys. A 303, 368 (1978).
H. Ohkura, T. Yamada, and K. Ikeda, Prog. Theor. Phys. 94, 47 (1995).
A. Mondragón and E. Hernández, Phys. Rev. C 41, 1975 (1990).
D. R. Tilley et al., Nucl. Phys. A 708, 3 (2002).
H. Akimune et al., Phys. Rev. C 67, 051302(R) (2003).
S. Nakayama et al., Phys. Rev. Lett. 85, 262 (2000).
M. Fujiwara et al., Nucl. Instrum. Methods Phys. Res. A 422, 484 (1999).
F. P. Brady et al., J. Phys. G 10, 363 (1984).
S. Nakayama et al., Phys. Rev. Lett. 87, 122502 (2001).
J. Jänecke et al., Phys. Rev. C 54, 1070 (1996).
T. Yamagata et al., in Proceedings of the Tours Symposium on Nuclear Physics V (in press).
J. M. Blatt and V. F. Weisskopf, Theoretical Nuclear Physics (Wiley, New York, 1952), p. 391.
C. E. Rolfs and W. S. Rodney, Cauldrons in the Cosmos (Univ. Chicago Press, Chicago, 1988), p. 178.
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From Yadernaya Fizika, Vol. 67, No. 9, 2004, pp. 1749–1753.
Original English Text Copyright © 2004 by Akimune, Yamagata, Nakayama, Fujiwara, Fushimi, K. Hara, K. Y. Hara, Ichihara, Kawase, Matsui, Nakanishi, Shiokawa, Tanaka, Utsunomiya, Yosoi.
This article was submitted by the authors in English.
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Akimune, H., Yamagata, T., Nakayama, S. et al. Trinucleon cluster structure at high-excitation energies in A=6 nuclei. Phys. Atom. Nuclei 67, 1721–1725 (2004). https://doi.org/10.1134/1.1806913
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DOI: https://doi.org/10.1134/1.1806913