Re-design of 241Am-Be neutron source irradiator facility at NNRI using MCNP-5 code

K. Tuffour-Achampong; B. J.B. Nyarko; E. H.K. Akaho; M. Asamoah; R. M.B. Sogbadji; R. G. Abrefah; J. Boffie

doi:10.1016/j.anucene.2011.10.009

Re-design of ²⁴¹Am-Be neutron source irradiator facility at NNRI using MCNP-5 code

K. Tuffour-Achampong, B. J.B. Nyarko, E. H.K. Akaho, M. Asamoah, R. M.B. Sogbadji, R. G. Abrefah, J. Boffie

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Evaluation of the flux in various irradiation channels and the absorbed dose rate of radiation by operators 3 cm from the surface of the concrete surrounding the vessel of the ²⁴¹Am-Be irradiator facility at NNRI, after it had been theoretically modified using MCNP-5 transport code is presented in this work. The ²⁴¹Am-Be neutron facility at NNRI consist of a single centrally placed neutron source and flanked by two irradiation channels. The theoretical models however had the number of neutron sources increased gradually to five with a fixed number of five irradiation channels of various radii. These were to help assess the viability to increase the irradiator performance and operational capacity. The results indicated an increase in flux in the irradiation channels as well as absorbed dose rates and their dose equivalents as the number of neutron sources increased. The dose equivalent values were all well within the limits set by ICRP and Radiation Protection Board (RPB - Ghana).

Original language	English
Pages (from-to)	60-64
Number of pages	5
Journal	Annals of Nuclear Energy
Volume	40
Issue number	1
DOIs	https://doi.org/10.1016/j.anucene.2011.10.009
Publication status	Published - Feb 2012
Externally published	Yes

Keywords

Absorbed dose rate
Am-Be source
Dose equivalent
MCNP-5
Neutron flux
Neutron source

Access to Document

10.1016/j.anucene.2011.10.009

Cite this

@article{5318685b98c04ef1bf224cb8d92db69b,

title = "Re-design of 241Am-Be neutron source irradiator facility at NNRI using MCNP-5 code",

abstract = "Evaluation of the flux in various irradiation channels and the absorbed dose rate of radiation by operators 3 cm from the surface of the concrete surrounding the vessel of the 241Am-Be irradiator facility at NNRI, after it had been theoretically modified using MCNP-5 transport code is presented in this work. The 241Am-Be neutron facility at NNRI consist of a single centrally placed neutron source and flanked by two irradiation channels. The theoretical models however had the number of neutron sources increased gradually to five with a fixed number of five irradiation channels of various radii. These were to help assess the viability to increase the irradiator performance and operational capacity. The results indicated an increase in flux in the irradiation channels as well as absorbed dose rates and their dose equivalents as the number of neutron sources increased. The dose equivalent values were all well within the limits set by ICRP and Radiation Protection Board (RPB - Ghana).",

keywords = "Absorbed dose rate, Am-Be source, Dose equivalent, MCNP-5, Neutron flux, Neutron source",

author = "K. Tuffour-Achampong and Nyarko, {B. J.B.} and Akaho, {E. H.K.} and M. Asamoah and Sogbadji, {R. M.B.} and Abrefah, {R. G.} and J. Boffie",

year = "2012",

month = feb,

doi = "10.1016/j.anucene.2011.10.009",

language = "English",

volume = "40",

pages = "60--64",

journal = "Annals of Nuclear Energy",

issn = "0306-4549",

publisher = "Elsevier Ltd.",

number = "1",

}

TY - JOUR

T1 - Re-design of 241Am-Be neutron source irradiator facility at NNRI using MCNP-5 code

AU - Tuffour-Achampong, K.

AU - Nyarko, B. J.B.

AU - Akaho, E. H.K.

AU - Asamoah, M.

AU - Sogbadji, R. M.B.

AU - Abrefah, R. G.

AU - Boffie, J.

PY - 2012/2

Y1 - 2012/2

N2 - Evaluation of the flux in various irradiation channels and the absorbed dose rate of radiation by operators 3 cm from the surface of the concrete surrounding the vessel of the 241Am-Be irradiator facility at NNRI, after it had been theoretically modified using MCNP-5 transport code is presented in this work. The 241Am-Be neutron facility at NNRI consist of a single centrally placed neutron source and flanked by two irradiation channels. The theoretical models however had the number of neutron sources increased gradually to five with a fixed number of five irradiation channels of various radii. These were to help assess the viability to increase the irradiator performance and operational capacity. The results indicated an increase in flux in the irradiation channels as well as absorbed dose rates and their dose equivalents as the number of neutron sources increased. The dose equivalent values were all well within the limits set by ICRP and Radiation Protection Board (RPB - Ghana).

AB - Evaluation of the flux in various irradiation channels and the absorbed dose rate of radiation by operators 3 cm from the surface of the concrete surrounding the vessel of the 241Am-Be irradiator facility at NNRI, after it had been theoretically modified using MCNP-5 transport code is presented in this work. The 241Am-Be neutron facility at NNRI consist of a single centrally placed neutron source and flanked by two irradiation channels. The theoretical models however had the number of neutron sources increased gradually to five with a fixed number of five irradiation channels of various radii. These were to help assess the viability to increase the irradiator performance and operational capacity. The results indicated an increase in flux in the irradiation channels as well as absorbed dose rates and their dose equivalents as the number of neutron sources increased. The dose equivalent values were all well within the limits set by ICRP and Radiation Protection Board (RPB - Ghana).

KW - Absorbed dose rate

KW - Am-Be source

KW - Dose equivalent

KW - MCNP-5

KW - Neutron flux

KW - Neutron source

UR - http://www.scopus.com/inward/record.url?scp=80755184790&partnerID=8YFLogxK

U2 - 10.1016/j.anucene.2011.10.009

DO - 10.1016/j.anucene.2011.10.009

M3 - Article

AN - SCOPUS:80755184790

SN - 0306-4549

VL - 40

SP - 60

EP - 64

JO - Annals of Nuclear Energy

JF - Annals of Nuclear Energy

IS - 1

ER -

Re-design of ²⁴¹Am-Be neutron source irradiator facility at NNRI using MCNP-5 code

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this