Relativistic Effects in K-shell Electron Impact Ionization

Uddin, M. Alfaz; Basak, A. K.

doi:10.1238/physica.regular.067a00112

Cited by 2 publications

(2 citation statements)

References 32 publications

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“…The discrepancies between the two predictions for the case of the heavier Ag 45+ ion arise because RTPD ignores the Breit interaction, while RBEA behaves closely to the DM model at higher energies through the special structure of the relativistic factor of the latter model, which accounts well for the K‐shell ionization data of Au even up to 1000 MeV as observed in Ref. 52. Furthermore, RBEA reproduces the experimental EI cross section of Ref.…”

Section: Discussionmentioning

confidence: 53%

Electron‐impact single ionization cross sections of helium isoelectronic systems

Uddin

Basak

Saha

2004

Int J of Quantum Chemistry

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ABSTRACT:-are calculated using a recently propounded parameter-free relativistic binary encounter (RBEA) model, which remains valid up to the relativistic energy domain. Our RBEA results are compared with those of the Coulomb-Born (CB) approximation, distorted wave Born approximation (DWBA), relativistic two-potential DWBA (RTPD), the simple empirical model of Brenshtam et al. (BRY), and the model of Deutsch and Märk (DM) along with the available experimental data. The RBEA model, while keeping the comparable predictive power of cross sections, is found to overcome the limitations of the empirical BRY and DM models with their fitting parameters, and the quantum mechanical CB, DWBA, and RTPD theories with arduous and lengthy calculations.

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Section: Discussionmentioning

confidence: 53%

Electron‐impact single ionization cross sections of helium isoelectronic systems

Uddin

Basak

Saha

2004

Int J of Quantum Chemistry

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“…While the impact of riverbank erosion as a whole is alarming, existing studies rarely explore the multifaceted nature of vulnerability affecting the livelihoods of the poor and marginalized, including their left-behind non-migrant family members who continue to live in erosion-prone areas. In most cases, the pattern of damages on human lives (e.g., health and wellbeing) and properties remain undocumented due to the geographical remoteness of these affected places (Uddin & Basak, 2012). This is particularly visible in one of the major initiatives namely Char Livelihood Programme 1 which recognizes river bank erosion as an instrumental element for displacement and distress for poor people in the country.…”

Section: Introductionmentioning

confidence: 99%

Exploring the Drivers of Vulnerability Among Disadvantaged Internal Migrants in Riverbank Erosion Prone Areas in North-West Bangladesh

Kabir

Kamruzzaman

2022

Journal of South Asian Development

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Bangladesh frequently suffers from acute riverbank erosions and, as a result, every year a large number of people internally migrate to new places mainly in search of livelihoods. While very few studies focus on the multifaceted nature of vulnerability experienced from riverbank erosions, the present study examines to what extent different drivers of vulnerability affect socio-economically disadvantaged internal migrants living in riverbank erosion-prone areas in Bangladesh. Empirical evidence from two north-western riverbank erosion-prone districts in Bangladesh demonstrates that the disadvantaged internal migrants and their household members were exposed to a range of vulnerabilities connected to economic, institutional, infrastructural, environmental, and social drivers. It is contended that evidently there are different types of vulnerability some of which are perceived to be more severe than others in the study areas. This study, therefore, suggests extending some specific support programmes including income generation schemes, access to institutional credit for the landless, improved inexpensive means of transportation, and improved communication. This article also proposes improving rural infrastructure including irrigation facilities, inexpensive transportation means for agricultural inputs or other farming materials, reasonable prices for daily necessities, and improved health care benefits.

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Relativistic Effects in K-shell Electron Impact Ionization

Cited by 2 publications

References 32 publications

Electron‐impact single ionization cross sections of helium isoelectronic systems

Electron‐impact single ionization cross sections of helium isoelectronic systems

Exploring the Drivers of Vulnerability Among Disadvantaged Internal Migrants in Riverbank Erosion Prone Areas in North-West Bangladesh

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