142 research outputs found
Direct observation of 4+ to 2+ gamma transition in 8Be
The low lying states in Be are believed to have a two-alpha cluster
structure and hence a large intrinsic quadrupole deformation. An earlier
calculation showed a large collective enhancement in gamma transition
probability between the low lying states leading to a 4 to 2 gamma
branch of and a resonant radiative cross section of 134 nb for
the entrance channel. We report here the first experimental
evidence for this transition through a coincidence
measurement in the reaction He()He using a gas
target. The measured cross sections on and off the 4 resonance are 165
41 (stat) 35 (sys) nb and 39 25 (stat) 7 (sys) nb,
respectively.Comment: Total 4 pages, 4 figures, in RevTeX format, submitted to PR
Response to the COVID-19 Pandemic: Physics Teaching in India
When academic institutions in India closed abruptly in March 2020 due to the
COVID-19 pandemic, formal education moved online. This transition had a very
uneven impact given the significant digital divide between rural and urban
India and the unequal distribution of digital resources in different
institutions. Access to resources varied substantially by individual, based on
socioeconomic factors as well as gender. Institutional support to the academic
community during this critical period was largely inadequate, which has had
serious consequences on the teaching of physics and other subjects that require
laboratory instruction. Educational institutions also provide safe and enabling
learning spaces for women students; reduced access to such facilities
undermined the work- and study-related dynamics for women because of the
scarcity of resources such as devices, data, and time. This paper reports on
efforts made towards understanding such challenges during the COVID-19 pandemic
and describes steps that were taken to address them.Comment: 5 pages, 3 figure
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