000009939 001__ 9939
000009939 005__ 20190219123654.0
000009939 020__ $$a538.9
000009939 037__ $$aTESIS-2013-009
000009939 041__ $$aspa
000009939 1001_ $$aCorrea Magdalena, Jonathan
000009939 24500 $$a10B4C Multi-Grid as an alternative to 3He for Large Area Neutron Detectors
000009939 260__ $$aZaragoza$$bUniversidad de Zaragoza, Prensas de la Universidad$$c2012
000009939 300__ $$amult. p
000009939 4900_ $$aTesis de la Universidad de Zaragoza$$v2012-87$$x2254-7606
000009939 500__ $$aPresentado: 18 12 2012
000009939 502__ $$aTesis-Univ. Zaragoza, Física de la Materia Condensada, 2012$$bZaragoza, Universidad de Zaragoza$$c2012
000009939 506__ $$aby-nc-nd$$bCreative Commons$$c3.0$$uhttps://creativecommons.org/licenses/by-nc-nd/3.0/
000009939 520__ $$aDespite its present shortage, 3He continues to be the most common neutron converter for detectors in neutron scattering science. However, it is obvious that the development of large area neutron detectors based on alternative neutron converters is rapidly becoming a matter of urgency. In the technique presented, grids each comprising 30 10B4C layers (each 1 µm thick) are used to convert neutrons into ionising particles which are subsequently detected in proportional gas counters. Several prototypes, the largest with a total active area of 8 cm x 200 cm, were tested. Up to 4.6 m2 of 10B-enriched boron carbide were coated onto aluminium blades using a DC magnetron sputtering machine. Characterisation of the prototype showed neutron efficiency to be n = 53.04% for 2.5 A neutrons, which is in line with expectations from MC simulation. Gamma-sensitivity = 5 · 10-5 was measured for a broad range of energies. Long term stability measurements were also performed. These results demonstrate the potential of this technique as alternative to 3He-based position sensitive detectors.
000009939 6531_ $$adetectores de partículas
000009939 700__ $$aGuerard, Bruno$$edir.
000009939 700__ $$aCampo Ruiz, Jesús Javier$$edir.
000009939 7102_ $$aUniversidad de Zaragoza$$bFísica de la Materia Condensada
000009939 8560_ $$fzaguan@unizar.es
000009939 8564_ $$s22739850$$uhttps://zaguan.unizar.es/record/9939/files/TESIS-2013-009.pdf$$zTexto completo (spa)
000009939 909CO $$ooai:zaguan.unizar.es:9939
000009939 909co $$ptesis
000009939 909CO $$pdriver
000009939 9102_ $$aFísica de la materia condensada$$bFísica de la Materia Condensada
000009939 980__ $$aTESIS