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1.
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A study in using MICROMEGAS to improve particle identification with the TAMU-MDM focal plane detectorA study in using MICROMEGAS to improve particle identification with the TAMU-MDM focal plane detector
/ Spiridon, A. (Texas A-M, Cyclotron Inst. ; Bucharest U.) ; Pollacco, E. (IRFU, Saclay) ; Saastamoinen, A. (Texas A-M, Cyclotron Inst.) ; Dag, M. (Texas A-M, Cyclotron Inst.) ; Roeder, B. (Texas A-M, Cyclotron Inst.) ; Tribble, R. (Texas A-M, Cyclotron Inst.) ; Trache, L. (Bucharest, IFIN-HH) ; Pascovici, G. (Bucharest, IFIN-HH) ; Mehl, B. (CERN) ; de Oliveira, R. (CERN)
A MICROMEGAS detection amplifier has been incorporated into the design of the TAMU MDM focal plane detector with the purpose of improving the energy resolution and thus, the particle identification. Beam tests showed a factor of 2 improvement over the original design, from 10-12% to 4-6%, for ions with A<40 at E/A around 10-20 MeV..
arXiv:1907.02327.-
2019-11-01 - 7 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 943 (2019) 162461
Fulltext: PDF;
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2.
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Upgrade of the TAMU MDM-focal plane detector with MicroMegas technology
/ Spiridon, A (Texas A-M, Cyclotron Inst.)) ; Pollacco, E (IRFU, Saclay) ; Roeder, B T (Texas A-M, Cyclotron Inst.)) ; Saastamoinen, A (Texas A-M, Cyclotron Inst.)) ; Chyzh, R (Texas A-M, Cyclotron Inst.)) ; Dag, M (Texas A-M, Cyclotron Inst.)) ; Tribble, R E (Texas A-M, Cyclotron Inst.)) ; Trache, L (Bucharest, IFIN-HH) ; Pascovici, G (Bucharest, IFIN-HH) ; De Oliveira, R (CERN)
A gridded ionization chamber used as a focal plane detector at the back of the TAMU-MDM spectrometer was modified to use MicroMegas technology for the purpose of improving energy resolution and particle identification. The upgraded system was tested in experimental conditions with several heavy-ion beams at 12 MeV/u and found to achieve resolutions between 3.2% and 4.8%. [...]
2016 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 376 (2016) 364-368
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3.
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AstroBox2 – Detector for low-energy β -delayed particle detection
/ Saastamoinen, A (Texas A-M, Cyclotron Inst.) ; Pollacco, E ; Roeder, B T (Texas A-M, Cyclotron Inst.) ; Spiridon, A (Texas A-M, Cyclotron Inst.) ; Daq, M (Texas A-M, Cyclotron Inst.) ; Trache, L (Bucharest, IFIN-HH) ; Pascovici, G (Bucharest, IFIN-HH) ; De Oliveira, R (CERN) ; Rodrigues, M R D (Sao Paulo U.) ; Tribble, R E (Texas A-M, Cyclotron Inst.)
Efficient suppression of β-background is essential for studies of low-energy β-delayed charged particle decays of astrophysical interest. A promising method for such studies has been a micro pattern gas amplifier detector where the sample is implanted into the gas volume and the decays that follow are observed with high gain and signal to noise ratio. [...]
2016 - 4 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 376 (2016) 357-360
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4.
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Sizeable beta-strength in 31Ar(beta-3p) decay
/ Koldste, G.T. (Aarhus U.) ; Blank, B. (CENBG, Gradignan) ; Borge, M.J.G. (CSIC, Madrid) ; Briz, J.A. (CSIC, Madrid) ; Carmona-Gallardo, M. (CSIC, Madrid) ; Fraile, L.M. (Madrid U.) ; Fynbo, H.O.U. (Aarhus U.) ; Giovinazzo, J. (CENBG, Gradignan) ; Johansen, J.G. (Aarhus U.) ; Jokinen, A. (Jyvaskyla U.) et al.
We present for the first time precise spectroscopic information on the recently discovered decay mode beta-delayed 3p-emission. The detection of the 3p events gives an increased sensitivity to the high energy part of the Gamow-Teller strength distribution from the decay of 31Ar revealing that as much as 30% of the strength resides in the beta-3p decay mode. [...]
arXiv:1404.2143.-
2014-10-07 - 5 p.
- Published in : Phys. Lett. B 737 (2014) 383-387
Article from SCOAP3: PDF; Elsevier Open Access article: PDF; Fulltext: S0370269314006650 - XML; arXiv:1404.2143 - PDF;
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5.
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Multi-particle emission in the decay of $^{31}$Ar
/ Koldste, G.T. (Aarhus U.) ; Blank, B. (CENBG, Gradignan) ; Borge, M.J.G. (CSIC, Madrid) ; Briz, J.A. (CSIC, Madrid) ; Carmona-Gallardo, M. (CSIC, Madrid) ; Fraile, L.M. (Madrid U.) ; Fynbo, H.O.U. (Aarhus U.) ; Giovinazzo, J. (CENBG, Gradignan) ; Grann, B.D. (Aarhus U.) ; Johansen, J.G. (Aarhus U.) et al.
A multi-hit capacity setup was used to study the decay of the dripline nucleus 31Ar, produced at the ISOLDE facility at CERN. A spectroscopic analysis of the beta-delayed three-proton decay of 31Ar is presented for the first time together with a quantitative analysis of the beta-delayed two-proton-gamma-decay. [...]
arXiv:1402.4620.-
2014-06-25 - 12 p.
- Published in : Phys. Rev. C 89 (2014) 064315
Fulltext: PDF; External link: Preprint
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6.
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Proton and $\gamma$- partial widths of astrophysically important states of $^{30}$S studied by the $\beta$-delayed decay of $^{31}$Ar
/ Koldste, G.T. (Aarhus U.) ; Blank, B. (Bordeaux U.) ; Borge, M.J.G. (Madrid, Inst. Estructura Materia) ; Briz, J.A. (Madrid, Inst. Estructura Materia) ; Carmona-Gallardo, M. (Madrid, Inst. Estructura Materia) ; Fraile, L.M. (Madrid U.) ; Fynbo, H.O.U. (Aarhus U.) ; Giovinazzo, J. (Bordeaux U.) ; Johansen, J.G. (Aarhus U.) ; Jokinen, A. (Jyvaskyla U.) et al.
Resonances just above the proton threshold in $^{30}$S affect the $^{29}$P$(p,\gamma)^{30}$S reaction under astrophysical conditions. The ($p,\gamma$)-reaction rate is currently determined indirectly and depends on the properties of the relevant resonances. [...]
arXiv:1303.1940.-
2013-05-28 - 6 p.
- Published in : Phys. Rev. C 87 (2013) 055808
APS published version, local copy: PDF; Fulltext: PDF; External link: Preprint
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7.
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R-matrix analysis of the beta decays of N-12 and B-12
/ Hyldegaard, S (Aarhus U.) ; Alcorta, M (Madrid, Inst. Estructura Materia) ; Bastin, B (Leuven U.) ; Borge, M J G (Madrid, Inst. Estructura Materia) ; Boutami, R (Madrid, Inst. Estructura Materia) ; Brandenburg, S (Groningen, KVI) ; Buscher, J (Leuven U.) ; Dendooven, P (Groningen, KVI) ; Diget, C Aa (York U., England) ; Van Duppen, P (Leuven U.) et al.
2010 - 10 p.
- Published in : Phys. Rev. C 81 (2010) 024303
APS Published version, local copy: PDF;
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8.
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Selected properties of nuclei at the magic shell closures from the studies of E1, M1 and E2 transition rates
/ Mach, H (Uppsala U., Inst. Theor. Phys. ; Notre Dame U.) ; Baluyut, A M (Notre Dame U.) ; Smith, D (Notre Dame U.) ; Ruchowska, E (Lodz, IPJ) ; Köster, U (Laue-Langevin Inst. ; CERN) ; Fraile, L. M (CERN ; Madrid U.) ; Pentillä, H (Jyvaskyla U.) ; Äystö, J (Jyvaskyla U.) ; Boutami, R (Madrid, Inst. Estructura Materia) ; Bradley, H (New South Wales U. ; Uppsala U., Inst. Theor. Phys.) et al.
2009 - 4 p.
- Published in : AIP Conf. Proc.: 1090 (2009) , pp. 502-506
In : 13th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics, Cologne, Germany, 25 – 29 Aug 2008, pp.502-506
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9.
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Beta-decay studies of states in $^{12}C$
/ Pedersen, S G ; Alcorta, M ; García-Borge, M J ; Brandenburg, S ; Büscher, J ; Dendooven, P ; Diget, C A ; Duppen, P V ; Fulton, B R ; Fynbo, H O U et al.
2006
- Published in : PoS: NIC-IX (2006) , pp. 244
Published version from PoS: PDF;
In : 9th International Symposium on Nuclear Astrophysic: Nuclei in the Cosmos, CERN, Geneva, Switzerland, 25 - 30 Jun 2006, pp.244
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10.
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Mass measurement of neutron-deficient nuclei close to the N = Z line
/ Hager, U ; Kankainen, A ; Eronen, T ; Rahaman, S ; Elomaa, V ; Hakala, J ; Rinta-Antila, S ; Jokinen, A ; Moore, I ; Saastamoinen, A et al.
2006
- Published in : PoS: NIC-IX (2006) , pp. 111
Published version from PoS: PDF;
In : 9th International Symposium on Nuclear Astrophysic: Nuclei in the Cosmos, CERN, Geneva, Switzerland, 25 - 30 Jun 2006, pp.111
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