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2.
The Encore active target detector: A Multi-Sampling Ionization Chamber Asher, B.W.; Almaraz-Calderon, S.; Baby, L.T. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
10/2021, Volume:
1014
Journal Article
Peer reviewed
Open access
The Encore active target detector is a Multi Sampling Ionization Chamber developed at Florida State University (FSU). Encore has been successfully used to measure fusion reactions with CH4 gas as ...well as (α,p) and (α,n) reactions using helium gas in the detector. The portability, self-normalizing, high-efficiency, and versatility of the Encore detector makes it ideal for measurements with low-intensity radioactive beams. This paper provides details on its development, operation, and analysis procedure. It also presents the results of benchmark experiments and comparison with existing data and calculations.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
There has been a long-standing discrepancy between existing measurements of the total fusion cross section for the
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O
+
12
C system at
E
c
.
m
.
∼
14
MeV. In order to resolve this inconsistency, ...the cross section was measured in two overlapping energy ranges using an
17
O beam and the
Encore
active target detector at Florida State University.
Encore
is a self-normalizing detector that measures a large portion of the fusion excitation function with a single beam energy. It also provides full angular coverage of the measured evaporation residues, thus ensuring a model independent measurement of the total fusion cross section. The data reported here show an oscillatory structure not previously observed in this system and agree with all previously reported measurements, resolving the long-standing discrepancy. Coupled reaction channels calculations reproduce the data except in the region of the the oscillation, which matches a similar structure seen in the
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O
+
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C total fusion excitation function.
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DOBA, EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, IZUM, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, SIK, UILJ, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
The CATRiNA deuterated neutron detector array at Florida State University consists of 16 2″×2″ and 16 4″×2″ EJ-315 detectors with characteristic light output and pulse-shape discrimination ...capabilities. The unique properties of the detectors, in part due to the anisotropic nature of (d,n) scattering, are used to extract the energy of neutrons via pulse-height spectrum unfolding. The unfolding method uses the light output and response matrix of the detectors to extract neutron energies, independent of the traditional time-of-flight (ToF) technique. Detailed response matrices of the CATRiNA detectors were measured at the Edwards Accelerator Laboratory at Ohio University via the 9Be(d,n) and 27Al(d,n) reactions. Full characterization of the detectors using digital electronics, as well as a description of the unfolding method are reported.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
6.
SABRE: The Silicon Array for Branching Ratio Experiments Good, E.C.; Sudarsan, B.; Macon, K.T. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
07/2021, Volume:
1003, Issue:
C
Journal Article
Peer reviewed
Open access
The Silicon Array for Branching Ratio Experiments (SABRE) has been developed for use to study reactions of interest to nuclear structure and astrophysics. The array has been incorporated into the ...Super Enge Split-Pole Spectrograph (SE-SPS) experimental setup at Florida State University’s John D. Fox accelerator laboratory to detect charged-particle decays in coincidence with reaction products detected by the SE-SPS focal plane detector. Its construction and electronics processing are discussed, as well as the commissioning data used to validate its performance.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
The observation of the emission of a proton from the exotic neutron-rich nucleus 11-berylium (11Be) prompted speculations on the nature of this process. Researchers at Florida State University ...observed a narrow resonance in 11B which suggests that the proton emission of 11Be is a two-step process rather than a more exotic process needing physics beyond the standard model to explain. Here, the location of the resonance near the proton-threshold in 11B, as well as its decay properties, are a manifestation of quantum many-body physics in the nucleus.
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