Gated multiple-sampling and tracking proportional chamber

Hashimoto, Takashi; Ishiyama, H.; Ishikawa, Tomoko; Kawamura, T.; Nakai, K.; Watanabe, Yasushi; Miyatake, H.; Tanaka, Manobu; Fuchi, Y.; Yoshikawa, N.; Jeong, Sohee; Katayama, Ichiro; Nomura, T.; Furukawa, T.; Mitsuoka, S.; Nishio, K.; Matsuda, M.; Ikezoe, H.; Fukuda, T.; Das, S.K.; Saha, P.K.; Mizoi, Y.; Komatsubara, T.; Yamaguchi, Mitsutaka; Tagishi, Y.

doi:10.1016/j.nima.2005.10.018

Cited by 33 publications

(18 citation statements)

References 17 publications

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“…Thanks to the close to 100% detection efficiency, however, cross sections down to the 1 mb range have been measured. Future improvements, such as the addition of faster trigger detectors before and after MUSIC or the use of a gating grid [10] could improve this limitation by more than an order of magnitude. …”

Section: The Multi-sampling Ionization Chamber (Music)mentioning

confidence: 99%

Study of (α,p) and (α,n)
Avila
¹
,
Rehm
²
,
Almaraz-Calderon
³

et al. 2017
Nuclear Instruments and Methods in Physics Research Section A:
22
0
16
1
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A B S T R A C TA large number of α p ( , ) and α n ( , ) reactions are known to play a fundamental role in nuclear astrophysics. This work presents a novel technique to study these reactions with the active target system MUSIC whose segmented anode allows the investigation of a large energy range of the excitation function with a single beam energy. In order to verify the method, we performed direct measurements of the previously measured reactions 17 O α n ( , ) 20 Ne, 23 Na α p ( , ) 26 Mg, and 23 Na α n ( , ) 26 Al. These reactions were investigated in inverse kinematics using 4 He gas in the detector to study the excitation functions in the energy range of about 2-6 MeV in the center of mass. We found good agreement between the cross sections of the 17 O α n ( , ) 20 Ne reaction measured in this work and previous measurements. Furthermore we have successfully performed a simultaneous measurement of the 23 Na α p ( , ) 26 Mg and 23 Na α n ( , ) 26 Al reactions.

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Section: The Multi-sampling Ionization Chamber (Music)mentioning

confidence: 99%

Study of (α,p) and (α,n)
Avila
¹
,
Rehm
²
,
Almaraz-Calderon
³

et al. 2017
Nuclear Instruments and Methods in Physics Research Section A:
22
0
16
1
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“…Measurements on the α elastic resonant scatterings of a helium gas target and heavy-ion beams, 14 O, 21 Na, 30 S, 7 Li [9] and 7 Be [12] have been performed at CRIB for astrophysical interests. These measurements provide information on astrophysical (α, γ) reaction rates, and are also very suitable for studying nuclear cluster structure of the compound nuclei.…”

Section: Alpha Resonant Scatteringmentioning

confidence: 99%

“…Direct measurement of (α, p) reactions, such as 14 O(α, p) [19], 11 C(α, p) [20], 21 Na(α, p), 18 Ne(α, p), 30 S(α, p), and 22 Mg(α, p), have also been performed with the TTIK method using RI beams at CRIB. Several (α, p) reactions have been studied at CRIB.…”

Section: Direct Measurement Of (α P) Reactionsmentioning

confidence: 99%

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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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“…Several (α, p) reactions, such as 14 O(α, p) [17], 11 C(α, p), 21 Na(α, p), 18 Ne(α, p), 30 S(α, p), and 22 Mg(α, p), have been studied at CRIB. For some of the recent measurements, an active target, referred to as "GEM-MSTPC" [18], has been used. Measurements on the elastic resonant scatterings of a helium target and heavy-ion beams such as 14 O, 21 Na, 7 Li [12] and 7 Be have also been performed.…”

Section: Introductionmentioning

confidence: 99%

Studying astrophysical reactions with low-energy RI beams at CRIB

Kahl

Hayakawa

Sakaguchi

et al. 2016

EPJ Web of Conferences

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Studies on nuclear astrophysics, nuclear structure, and other interests have been performed using the radioactive-isotope (RI) beams at the low-energy RI beam separator CRIB, operated by Center for Nuclear Study (CNS), the University of Tokyo. A typical measurement performed at CRIB is the elastic resonant scattering with the inverse kinematics. One recent experiment was on the α resonant scattering with 7 Li and 7 Be beams. This study is related to the astrophysical 7 Li/ 7 Be(α,γ) reactions, important at hot p-p chain and νp-process in supernovae. There have also been measurements based on other experimental methods. 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 reaction15 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.

show abstract

Gated multiple-sampling and tracking proportional chamber

Cited by 33 publications

References 17 publications

Study of (α,p) and (α,n)
Avila
¹
,
Rehm
²
,
Almaraz-Calderon
³

et al. 2017
Nuclear Instruments and Methods in Physics Research Section A:
22
0
16
1
View full text Add to dashboard Cite

Study of (α,p) and (α,n)
Avila
¹
,
Rehm
²
,
Almaraz-Calderon
³

et al. 2017
Nuclear Instruments and Methods in Physics Research Section A:
22
0
16
1
View full text Add to dashboard Cite

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

Studying astrophysical reactions with low-energy RI beams at CRIB

Contact Info

Product

Resources

About

Gated multiple-sampling and tracking proportional chamber

Cited by 33 publications

References 17 publications

Study of (α,p) and (α,n)Avila1, Rehm2, Almaraz-Calderon3 et al. 2017Nuclear Instruments and Methods in Physics Research Section A: 220161View full textAdd to dashboardCite

Study of (α,p) and (α,n)Avila1, Rehm2, Almaraz-Calderon3 et al. 2017Nuclear Instruments and Methods in Physics Research Section A: 220161View full textAdd to dashboardCite

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

Studying astrophysical reactions with low-energy RI beams at CRIB

Contact Info

Product

Resources

About

Study of (α,p) and (α,n)
Avila
¹
,
Rehm
²
,
Almaraz-Calderon
³

et al. 2017
Nuclear Instruments and Methods in Physics Research Section A:
22
0
16
1
View full text Add to dashboard Cite

Study of (α,p) and (α,n)
Avila
¹
,
Rehm
²
,
Almaraz-Calderon
³

et al. 2017
Nuclear Instruments and Methods in Physics Research Section A:
22
0
16
1
View full text Add to dashboard Cite