Construction of the SCRIT electron scattering facility at the RIKEN RI Beam Factory

Wakasugi, M.; Ohnishi, T.; Wang, S.; Miyashita, Y.; Adachi, T.; Amagai, Tatsuya; Enokizono, A.; Enomoto, Atsushi; Haraguchi, Yuji; Hara, Masahiro; Hori, T.; Ichikawa, Shinichi; Kikuchi, Takashi; Kitazawa, Riko; Koizumi, K.; Kurita, K.; Miyamoto, Tosihiko; Ogawara, Ryo; Shimakura, Y.; Takehara, Hiroki; Tamae, T.; Tamaki, Shigeru; Togasaki, Mamoru; Yamaguchi, Takayuki; Yanagi, K.; Suda, T.

doi:10.1016/j.nimb.2013.04.037

Cited by 35 publications

(15 citation statements)

References 11 publications

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“…ρ Be = ρ HO (N = 4, R Be , r) + ρ WS (N = 1, R Be , a Be , r), (5) ρ Al = ρ WS (N = 14, R Al , a Al , r), are normalization factors that conserve number of neutron(s). Here, we introduced the Woods-Saxon distribution with a tail density to account for the loosely-bound valence neutron in 9 Be, and determined the diffuseness as well as the HO width parameter for the 9 Be target so as to reproduce the experimental data at 33.6A [41] and 921A MeV [39].…”

Section: Results Of the Glauber-model Analysis And Discussionmentioning

confidence: 99%

“…The electron scattering which has been the most successful method to determine the nuclear charge radii is not applicable because the short-lived nuclei are not available as targets. While the effort to perform electron scattering on unstable nuclei is being pursued [5], it may take some time to achieve practical applications. The optical IS method, on the other hand, requires only a small number of atoms of the unstable nuclei.…”

Section: Introductionmentioning

confidence: 99%

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Charge-changing cross-section measurements of C12–16 at around 45A MeV and development of a Glauber model for incident energies
Tran¹,
Ong²,
Nguyễn³
et al. 2016
Phys. Rev. C
28
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8
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We have measured for the first time the charge-changing cross sections (σCC) of 12−16 C on a 12 C target at energies below 100A MeV. To analyze these low-energy data, we have developed a finiterange Glauber model with a global parameter set within the optical-limit approximation which is applicable to reaction cross section (σR) and σCC measurements at incident energies from 10A to 2100A MeV. Adopting the proton-density distribution of 12 C known from the electron-scattering data, as well as the bare total nucleon-nucleon cross sections, and the real-to-imaginary-part ratios of the forward proton-proton elastic scattering amplitude available in the literatures, we determine the energy-dependent slope parameter βpn of the proton-neutron elastic differential cross section so as to reproduce the existing σR and interaction-cross-section data for 12 C+ 12 C over a wide range of incident energies. The Glauber model thus formulated is applied to calculate the σR's of 12 C on a 9 Be and 27 Al targets at various incident energies. Our calculations show excellent agreement with the experimental data. Applying our model to the σR and σCC for the "neutron-skin"16 C nucleus, we reconfirm the importance of measurements at incident energies below 100A MeV. The proton root-mean-square radii of 12−16 C are extracted using the measured σCC's and the existing σR data. The results for 12−14 C are consistent with the values from the electron scatterings, demonstrating the feasibility, usefulness of the σCC measurement and the present Glauber model.

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Section: Results Of the Glauber-model Analysis And Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Charge-changing cross-section measurements of C12–16 at around 45A MeV and development of a Glauber model for incident energies
Tran¹,
Ong²,
Nguyễn³
et al. 2016
Phys. Rev. C
28
0
8
0
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“…This result led us to construct an electron scattering facility for unstable nuclei at the RIKEN RI Beam Factory. Construction began in 2009, and a commissioning experiment has been performed [5,6]. Recently, we completed the first electron elastic scattering by 132 Xe and deduced its charge density distribution precisely [7].…”

Section: Introductionmentioning

confidence: 99%

The Scrit Electron Scattering Facility At Riken RI Beam Factory

Ohnishi

Hara

Hori

et al. 2017

Proceedings of the 26th International Nuclear Physics Conference — PoS(INPC2016)

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The SCRIT (Self-Confining Radioactive-Isotope Ion Target) electron scattering facility has been constructed at the RIKEN RI Beam Factory. In the commissioning experiment, the ion-trapping properties of the SCRIT system were studied using stable ions. By using an electron spectrometer, the momentum transfer distribution of the electron elastic scattering of 132 Xe was measured at 150, 200, and 300 MeV, and the charge density distribution was deduced. During the measurements, a luminosity of 1.8×10 27 cm −2 s −1 was achieved with a 250-mA electron beam and only 10 8 trapped ions. Production of RIs has begun in an electron-beam-driven RI separator, and developments are underway to increase the production rate of short-lived nuclei. Soon, measurements of electron elastic scattering by short-lived nuclei will be performed.

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“…In this paper, the second method with a completely new and novel target-forming technique, SCRIT (Self-Confining Radioactive Isotope Target) [6], is discussed. The feasibility of SCRIT was already demonstrated with a prototype device [7,8], and following the success of the feasibility study, we completed the SCRIT electron scattering facility dedicated for exotic nuclei in the RI Beam Factory at RIKEN [9].…”

Section: Introductionmentioning

confidence: 99%

First Result from Scrit Electron Scattering Facility : Charge Density Distribution Of 132 Xe

Tsukada¹,

Kasama²,

Namba³

et al. 2017

Proceedings of the 26th International Nuclear Physics Conference — PoS(INPC2016)

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We have constructed the SCRIT electron scattering facility at RIKEN in order to realize electron scattering off unstable nuclei. Because electron scattering is the most powerful and reliable tool to study the internal structure of the atomic nuclei as demonstrated for many stable nuclei in the latter half of the 20th century, actualization of electron scattering for the unstable nuclei has been long awaited. Recently, we have performed a series of elastic electron scattering experiments with 132 Xe target. The high luminosity of around 10 27 cm −2 s −1 which is a minimum-requirement for electron scattering is achieved with using only 10 8 target ions. By comparing with a DWBA calculation assuming the two-parameter Fermi distribution as the nuclear charge density distribution, it is found that a root-mean-square of radius is consistent with that from the measurement of X-ray of muonic atom and an information of surface shape of 132 Xe nucleus is extracted for the first time.

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Construction of the SCRIT electron scattering facility at the RIKEN RI Beam Factory

Cited by 35 publications

References 11 publications

Charge-changing cross-section measurements of C12–16 at around 45A MeV and development of a Glauber model for incident energies
Tran¹,
Ong²,
Nguyễn³
et al. 2016
Phys. Rev. C
28
0
8
0
View full text Add to dashboard Cite

Charge-changing cross-section measurements of C12–16 at around 45A MeV and development of a Glauber model for incident energies
Tran¹,
Ong²,
Nguyễn³
et al. 2016
Phys. Rev. C
28
0
8
0
View full text Add to dashboard Cite

The Scrit Electron Scattering Facility At Riken RI Beam Factory

First Result from Scrit Electron Scattering Facility : Charge Density Distribution Of 132 Xe

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Construction of the SCRIT electron scattering facility at the RIKEN RI Beam Factory

Cited by 35 publications

References 11 publications

Charge-changing cross-section measurements of C12–16 at around 45A MeV and development of a Glauber model for incident energies Tran1, Ong2, Nguyễn3 et al. 2016Phys. Rev. C28080View full textAdd to dashboardCite

Charge-changing cross-section measurements of C12–16 at around 45A MeV and development of a Glauber model for incident energies Tran1, Ong2, Nguyễn3 et al. 2016Phys. Rev. C28080View full textAdd to dashboardCite

The Scrit Electron Scattering Facility At Riken RI Beam Factory

First Result from Scrit Electron Scattering Facility : Charge Density Distribution Of 132 Xe

Contact Info

Product

Resources

About

Charge-changing cross-section measurements of C12–16 at around 45A MeV and development of a Glauber model for incident energies
Tran¹,
Ong²,
Nguyễn³
et al. 2016
Phys. Rev. C
28
0
8
0
View full text Add to dashboard Cite

Charge-changing cross-section measurements of C12–16 at around 45A MeV and development of a Glauber model for incident energies
Tran¹,
Ong²,
Nguyễn³
et al. 2016
Phys. Rev. C
28
0
8
0
View full text Add to dashboard Cite