scholarly journals A Search for Levels of 7Li Between 9·0 and 9·55 MeV Excitation

1959 ◽  
Vol 12 (3) ◽  
pp. 231 ◽  
Author(s):  
KH Purser
Keyword(s):  
Cross Section ◽  
Energy Resolution ◽  
Resonance Structure ◽  
Good Energy Resolution ◽  
Good Energy ◽  
The Cross

The cross section of the reaction 6Li(n,3H)'He has been measured, with good energy resolution, over the neutron range 2�0--2�65 MeV. This corresponds to an excitation of 7Li from 9� 0 to 9� 55 MeV, a region in which photodisintegration experiments indicate the presence of one or more levels. No resonance structure was observed in this experiment and possible reasons for this are discussed.

A small rugged imaging X-ray spectrometer: A lixiscope with good energy resolution

1980 ◽  
Vol 172 (3) ◽  
pp. 471-477 ◽  
Author(s):  
Lo I Yin ◽  
Jacob I. Trombka ◽  
Stephen M. Seltzer
Keyword(s):  
Energy Resolution ◽  
Good Energy Resolution ◽  
X Ray ◽  
Good Energy

scholarly journals Scintillating bolometers: A key for determining WIMP parameters

2014 ◽  
Vol 29 (19) ◽  
pp. 1443009 ◽  
Author(s):  
D. G. Cerdeño ◽  
C. Marcos ◽  
M. Peiró ◽  
M. Fornasa ◽  
C. Cuesta ◽  
...  
Keyword(s):  
Cross Section ◽  
Direct Detection ◽  
Massive Particle ◽  
Thermal Quenching ◽  
Good Energy Resolution ◽  
Discrimination Capability ◽  
Good Energy ◽  
Excellent Tool ◽  
Nuclear Structure Functions

In the last decade direct detection Dark Matter (DM) experiments have increased enormously their sensitivity and ton-scale setups have been proposed, especially using germanium and xenon targets with double readout and background discrimination capabilities. In light of this situation, we study the prospects for determining the parameters of Weakly Interacting Massive Particle (WIMP) DM (mass, spin-dependent (SD) and spin-independent (SI) cross-section off nucleons) by combining the results of such experiments in the case of a hypothetical detection. In general, the degeneracy between the SD and SI components of the scattering cross-section can only be removed using targets with different sensitivities to these components. Scintillating bolometers, with particle discrimination capability, very good energy resolution and threshold and a wide choice of target materials, are an excellent tool for a multitarget complementary DM search. We investigate how the simultaneous use of scintillating targets with different SD-SI sensitivities and/or light isotopes (as the case of CaF 2 and NaI ) significantly improves the determination of the WIMP parameters. In order to make the analysis more realistic we include the effect of uncertainties in the halo model and in the spin-dependent nuclear structure functions, as well as the effect of a thermal quenching different from 1.

Comparative Studies of the Light Yield Non-Proportionality and Energy Resolution of CsI(Tl), LYSO and BGO Scintillation Crystals

2016 ◽  
Vol 872 ◽  
pp. 266-270
Author(s):  
Pruittipol Limkitjaroenporn ◽  
Narong Sangwaranatee ◽  
Wuttichai Chaiphaksa ◽  
Jakrapong Kaewkhao
Keyword(s):  
Energy Resolution ◽  
Comparative Studies ◽  
Gamma Ray ◽  
Light Yield ◽  
Good Energy Resolution ◽  
Intrinsic Resolution ◽  
Scintillation Crystals ◽  
Good Energy ◽  
Better Than

This article, for comparison, the non-proportionality of light yield and energy resolution of BGO, LYSO and CsI(Tl) scintillators couple to the R1306 PMT readouts were investigated. At 662 keV from 137Cs source, the good energy resolution of 7.13% for CsI(Tl) superior than LYSO and BGO scintillators. The energy resolution on gamma-ray energy was also evaluated to expose the scintillator intrinsic resolution parameters. For non-proportionality of light yield, the study showed a light yield non-proportionality 0.35% of LYSO, the value is better than 4.82 % for CsI(Tl) and 1.53 % of BGO scintillators.

Scintillation Properties of Ce-Doped LuYAP Crystal for Gamma Ray Detection

2015 ◽  
Vol 804 ◽  
pp. 93-96
Author(s):  
Akapong Phunpueok ◽  
Voranuch Thongpool ◽  
Weerapong Chewpraditkul
Keyword(s):  
Energy Resolution ◽  
Gamma Ray ◽  
Light Yield ◽  
High Energy ◽  
Stopping Power ◽  
Strongly Correlated ◽  
Photon Yield ◽  
Good Energy Resolution ◽  
Intrinsic Resolution ◽  
Good Energy

In the present day, inorganic scintillating crystals become a main part in detection and spectroscopy of nuclear particles and high energy photons, more spectively in X/g-ray imaging. The good properties for the scintillating crystals used in these applications require high photon yield, high stopping power, good energy resolution, good light yield proportionality, and minimal afterglow. The main useful of Ce-doped Lu0.7Y0.3AlO3 (LuYAP(Ce)) are high stopping power and non-hygroscopic which are expected to be key ingredients for medical imaging. In this work, we studied the light yield non-proportionality and energy resolution of LuYAP(Ce) crystal with the energy range from 31 to 1,274.5 keV using photomultiplier tube (PMT) readout. The intrinsic resolution of the LuYAP(Ce) crystal has been determined after correcting the measured PMT resolution. The results showed that the non-proportional response of the crystals was strongly correlated with the intrinsic resolution of the crystals.

Novel Equipment for In Situ Alpha Spectrometry with Good Energy Resolution

2015 ◽  
Vol 109 (6) ◽  
pp. 601-605 ◽  
Author(s):  
Roy Pöllänen ◽  
Jani Turunen ◽  
Tero Karhunen ◽  
Kari Peräjärvi ◽  
Teemu Siiskonen ◽  
...  
Keyword(s):  
Energy Resolution ◽  
Alpha Spectrometry ◽  
Good Energy Resolution ◽  
Good Energy

Comparison of Scintillation Light Yield of CWO and BGO Single Crystals for Gamma Ray Detection

2020 ◽  
Vol 901 ◽  
pp. 89-94
Author(s):  
Akapong Phunpueok ◽  
Voranuch Thongpool ◽  
Sarawut Jaiyen ◽  
Hua Shu Hsu
Keyword(s):  
Energy Resolution ◽  
Gamma Ray ◽  
Radiation Detection ◽  
Light Yield ◽  
Stopping Power ◽  
Good Energy Resolution ◽  
Scintillation Light ◽  
Radioactive Materials ◽  
Yield Value ◽  
Good Energy

Nowadays, radioactive materials are being applied in medical imaging. Because humans cannot observe radiation, radiation detection materials are very important to humans. A scintillator is a material that can change gamma photons to visible photons. Good scintillators should have the following properties: high scintillation light yield, good energy resolution, and high density. In this work, the scintillation light yield property of CWO crystals was studied due to its interesting properties, such as high stopping power and low hygroscopicity. CWO crystals were compared with BGO crystals. From the results, it was found that the BGO crystals showed higher scintillation light yield value at 662 keV energy from 137Cs radioactive source than the CWO crystals, resulting in better energy resolution value. The intrinsic light yield and loss parameters for both crystals are also presented in this work.

Gamma-ray line investigations with the Durham y-ray spectrometer

1981 ◽  
Vol 301 (1462) ◽  
pp. 687-691 ◽  
Keyword(s):  
Solid State ◽  
Neutron Stars ◽  
Energy Resolution ◽  
Gamma Ray ◽  
Seyfert Galaxies ◽  
Observation Time ◽  
Galactic Centre ◽  
Good Energy Resolution ◽  
Good Energy ◽  
Balloon Experiments

The study of y-ray lines of astrophysical origin has become more interesting with the introduction of cooled solid state detectors having a very good energy resolution, 1-2 keV at 100 keV, and ca. 2-3 keV around 1 MeV. Some of the single crystal spectrometers currently in use in y-ray astronomy are capable of detecting lines with intensities 3 x 10 -3 ph cm -2 s -1 when used on balloon experiments. This is close to the y-ray intensities predicted from some celestial y-ray sources. Knowing the y-ray background precisely and with a reasonable although lengthy observation time it should be possible to detect lines from candidate celestial sources, for example neutron stars, Seyfert galaxies or the galactic centre.

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