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Yamaguchi, H.; Hashimoto, T.; Hayakawa, S.; Binh, D. N.; Kahl, D.; Kubono, S.; Wakabayashi, Y.; Kawabata, T.; Teranishi, Takashi

doi:10.1103/physrevc.83.034306

Cited by 60 publications

(120 citation statements)

References 35 publications

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“…This method has several advantages, namely, (a) using inverse kinematics, we can study reactions with short-lived RI which cannot be used as the target, (b) we can perform simultaneous measurements of cross sections at various excitation energies without varying the incoming RI beam energy, and (c) when the beam is stopped in the target, we can perform measurements at 180 • in center-of-mass angle, where the Coulomb scattering is minimal. Many experiments have been successfully performed with this method [6][7][8][9][10][11].…”

Section: Alpha Resonant Scatteringmentioning

confidence: 99%

Experimental Studies of Light-Ion Nuclear Reactions Using Low-Energy RI Beams

Kahl¹,

Hayakawa²,

Sakaguchi³

et al. 2017

Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016)

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CRIB (CNS Radio-Isotope Beam separator) is a low-energy RI beam separator of Center for Nuclear Study (CNS), the University of Tokyo. Studies on nuclear astrophysics, nuclear structure, and other interests have been performed using the RI beams at CRIB, forming international collaborations. A striking method to study astrophyiscal reactions involving radioactive nuclei is the thick-target method in inverse kinematics. Several astrophysical alpha-induced reactions have been be studied with that method at CRIB. A recent example is on the α resonant scattering with a radioactive 7 Be beam. This study is related to the astrophysical 7 Be(α,γ) reactions, important at hot p-p chain and νp-process in supernovae. There have been measurements based on several indirect methods, such as the asymptotic normalization coefficient (ANC) and Trojan horse method (THM). The first THM measurement using an RI beam has been performed at CRIB, to study the 18 F(p, α) 15 O reaction at astrophysical energies via the three body reaction 2 H( 18 F, α 15 O)n. The 18 F(p, α) 15 O reaction rate is crucial to understand the 511-keV γ-ray production in nova explosion phenomena, and we successfully evaluated the reaction cross section at novae temperature and below experimentally for the first time.

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Section: Alpha Resonant Scatteringmentioning

confidence: 99%

Experimental Studies of Light-Ion Nuclear Reactions Using Low-Energy RI Beams

Kahl¹,

Hayakawa²,

Sakaguchi³

et al. 2017

Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016)

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show abstract

“…This method has several advantages, namely, (a) using inverse kinematics, we can study reactions with short-lived RI which cannot be used as the target, (b) we can perform simultaneous measurements of cross section of various excitation energies without varying the incoming RI beam energy, and (c) we can perform measurements at 180 • in center-of-mass angle, where the Coulomb scattering is minimal. Many fruitful results have been obtained at CRIB with this method [5][6][7][8][9]. A recent major topic of our interest is the measurement of alpha-induced reactions.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, we evaluated Γ γ by a calculation based on the Weisskopf unit with a spectroscopic factor of 0.1, which roughly reproduces the experimentally known Γ γ of the 8.1045 and 8.420-MeV resonances. Note that such a spectroscopic factor was not explicitly used in the plot of our previous publication [9]. The labels (a)-(d) in Fig.…”

Section: Astrophysical Reaction Rate Of 7 Be(α γ)mentioning

confidence: 99%

“…Several (α, p) reactions, such as 14 O(α, p), 11 C(α, p), 21 Na(α, p), 18 Ne(α, p), and 30 S(α, p) have been measured at CRIB. The elastic resonant scatterings of α particle using 14 O, 21 Na, 7 Li [9] and 7 Be beams have also been measured. These measurements are related to astrophysical (α, γ) reaction rates, and are also relevant for studying nuclear cluster structure.…”

Section: Introductionmentioning

confidence: 99%

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Studies on alpha-induced astrophysical reactions using the low-energy RI beam separator CRIB

Yamaguchi

Kahl

Nakao

et al. 2014

EPJ Web of Conferences

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Abstract. Several alpha-induced astrophysical reactions have been studied at CRIB (CNS Radioactive Ion Beam separator), which is a low-energy RI beam separator at Center for Nuclear Study (CNS) of the University of Tokyo. Two major methods to study them are the α resonant scattering, and direct measurements of (α,p) reactions using an active or inactive helium gas target. Among the recent studies at CRIB, the measurement of 7 Be+α resonant scattering is discussed.

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“…This method has several advantages, namely, (a) using inverse kinematics, we can study reactions with short-lived RI which cannot be used as the target, (b) we can perform simultaneous measurements of cross section of various excitation energies without varying the incoming RI beam energy, and (c) we can perform measurements at 180 • in center-of-mass angle, where the Coulomb scattering is minimal. Many fruitful results have been obtained at CRIB with this method [5,6,7,8,9,10,11,12].…”

Section: Introductionmentioning

confidence: 99%

Alpha resonant scattering for astrophysical reaction studies

Kahl

Nakao

Wakabayashi

et al. 2014

AIP Conference Proceedings

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Abstract. Several alpha-induced astrophysical reactions have been studied at CRIB (CNS Radioactive Ion Beam separator), which is a low-energy RI beam separator at Center for Nuclear Study (CNS) of the University of Tokyo. One of the methods to study them is the α resonant scattering using the thick-target method in inverse kinematics. Among the recent studies at CRIB, the measurement of 7 Be+α resonant scattering is discussed. Based on the result of the experiment, we evaluated the contributions of high-lying resonances for the 7 Be(α, γ) reaction, and proposed a new cluster band in 11 C.

show abstract

αresonance structure inB11studied via resonant scattering of

Cited by 60 publications

References 35 publications

Experimental Studies of Light-Ion Nuclear Reactions Using Low-Energy RI Beams

Experimental Studies of Light-Ion Nuclear Reactions Using Low-Energy RI Beams

Studies on alpha-induced astrophysical reactions using the low-energy RI beam separator CRIB

Alpha resonant scattering for astrophysical reaction studies

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