Low-energy radioisotope beam separator CRIB

Yanagisawa, Y.; Kubono, S.; Teranishi, Takashi; Ue, K.; Michimasa, S.; Notani, M.; He, Jiajia; Ohshiro, Y.; Shimoura, S.; Watanabe, Satoshi; Yamazaki, N.; Iwasaki, H.; Kato, S.; Kishida, T.; Morikawa, T.; Mizoi, Y.

doi:10.1016/j.nima.2004.09.041

Cited by 107 publications

(35 citation statements)

References 15 publications

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“…We performed an experiment measuring 30 S alpha resonant elastic scattering at the Center for Nuclear Study low-energy radioactive ion beam separator facility (CRIB) [6]. The 30 S beam was produced with a typical purity of 28%, an intensity of 8 × 10 3 pps, and separated at 4.0 MeV/u [7].…”

Section: Experimental Methodsmentioning

confidence: 99%

³⁰S($\alpha $, p) Thermonuclear Reaction Rate from Experimental Level Structure of ³⁴Ar

Kahl¹,

Chen²,

Kubono³

et al. 2017

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

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Type I x-ray bursts are the most frequent thermonuclear explosions in the galaxy. Owing to their recurrence from known astronomical objects, burst morphology is extensively documented, and they are modeled very successfully as neutron-deficient, thermonuclear runaway on the surface of accreting neutron stars. While reaction networks include hundreds of isotopes and thousands of nuclear processes, only a small subset appear to play a pivotal role. One such reaction is the 30 S(α, p) reaction, which is believed to be a crucial link in the explosive helium burning which is responsible for the large energy flux. However, very little experimental information is available concerning the cross section itself, nor the 34 Ar compound nucleus at the relevant energies. We performed the first study of the entrance channel via 30 S alpha resonant elastic scattering using a state-of-the-art, low-energy, 30 S radioactive ion beam. The measurement was performed in inverse kinematics using a newlydeveloped active target. An R-matrix analysis of the excitation function reveals previously unknown resonances, including their quantum properties of spin, parity, width, and energy.

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Section: Experimental Methodsmentioning

confidence: 99%

³⁰S($\alpha $, p) Thermonuclear Reaction Rate from Experimental Level Structure of ³⁴Ar

Kahl¹,

Chen²,

Kubono³

et al. 2017

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

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“…The radioactive 30 S beam was produced in-flight via the 3 He( 28 Si, 30 S)n reaction using the Center for Nuclear Study (CNS) low-energy radioactive ion beam separator (CRIB) [10,11], where we bombarded a cryogenically-cooled gas cell [12] of 3 He at 1.72 mg · cm −2 with a 28 Si beam at 7.3 MeV/u [13]. The 30 S beam arrived on target at 1.6 MeV/u, an average of 30% purity, and with an intensity of 10 4 particles per second.…”

Section: Methodsmentioning

confidence: 99%

Experimental investigation of the³⁰S(α, p) thermonuclear reaction in x-ray bursts

Kahl

Chen

Kubono

et al. 2016

EPJ Web of Conferences

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Abstract. We performed the first measurement of 30 S+α resonant elastic scattering to experimentally examine the 30 S(α, p) stellar reaction rate in type I x-ray bursts. These bursts are the most frequent thermonuclear explosions in the galaxy, resulting from thermonuclear runaway on the surface of accreting neutron star binaries. The 30 S(α, p) reaction plays a critical role in burst models, yet very little is known about the compound nucleus 34 Ar at these energies nor the reaction rate itself. We performed a measurement of alpha elastic scattering with a radioactive beam of 30 S to experimentally probe the entrance channel. Utilizing a gaseous active target system and silicon detector array, we extracted the excitation function from 1.8 to 5.5 MeV near 160 • in the center-of-mass frame. The experimental data were analyzed with an R-Matrix calculation, and we discovered several new resonances and extracted their quantum properties (resonance energy, width, spin, and parity). Finally, we calculated the narrow resonant thermonuclear reaction rate of 30 S(α, p) for these new resonances.

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“…The measurement was performed at CRIB [9,10]. CRIB can produce RI beams with the inflight method, using primary heavy-ion beams from the AVF cyclotron of RIKEN (K=70).…”

Section: Methodsmentioning

confidence: 99%

Proton resonance scattering on $^{7}$Be

Yamaguchi¹,

Wakabayashi²,

Amádio³

et al. 2010

Proceedings of International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos - IX — PoS(NIC-IX)

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We have studied the proton resonance scattering of 7 Be by using a pure 7 Be beam produced at CRIB (CNS Radioactive Ion Beam separator; CNS stands for Center of Nuclear Study, University of Tokyo). The excitation function of 8 B was measured up to the excitation energy of 6.8 MeV, using the thick-target method. The excited states of 8 B higher than 3.5 MeV were not known by the past experiments. This proton elastic scattering is also of importance in relation with the 7 Be(p,γ) 8 B reaction, which is a key reaction in the standard solar model.

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Low-energy radioisotope beam separator CRIB

Cited by 107 publications

References 15 publications

³⁰S(\(\alpha \), p) Thermonuclear Reaction Rate from Experimental Level Structure of ³⁴Ar

³⁰S(\(\alpha \), p) Thermonuclear Reaction Rate from Experimental Level Structure of ³⁴Ar

Experimental investigation of the³⁰S(α, p) thermonuclear reaction in x-ray bursts

Proton resonance scattering on $^{7}$Be

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Low-energy radioisotope beam separator CRIB

Cited by 107 publications

References 15 publications

30S(\(\alpha \), p) Thermonuclear Reaction Rate from Experimental Level Structure of 34Ar

30S(\(\alpha \), p) Thermonuclear Reaction Rate from Experimental Level Structure of 34Ar

Experimental investigation of the30S(α, p) thermonuclear reaction in x-ray bursts

Proton resonance scattering on $^{7}$Be

Contact Info

Product

Resources

About

³⁰S(\(\alpha \), p) Thermonuclear Reaction Rate from Experimental Level Structure of ³⁴Ar

³⁰S(\(\alpha \), p) Thermonuclear Reaction Rate from Experimental Level Structure of ³⁴Ar

Experimental investigation of the³⁰S(α, p) thermonuclear reaction in x-ray bursts