The ionizing radiation environment on the moon

2007 ◽  
Vol 40 (3) ◽  
pp. 338-341 ◽  
Author(s):  
J.H. Adams ◽  
M. Bhattacharya ◽  
Z.W. Lin ◽  
G. Pendleton ◽  
J.W. Watts
Space Weather ◽  
2014 ◽  
Vol 12 (6) ◽  
pp. 329-336 ◽  
Author(s):  
Jamie A. Porter ◽  
Lawrence W. Townsend ◽  
Harlan Spence ◽  
Michael Golightly ◽  
Nathan Schwadron ◽  
...  

2021 ◽  
Vol 7 (3) ◽  
pp. 3-11
Author(s):  
Lu Li ◽  
Yu Qing-Long ◽  
Zhou Ping ◽  
Zhang Xin ◽  
Zhang Xian-Guo ◽  
...  

Since the moon’s revolution cycle is exactly the same as its rotation cycle, we can only see the moon always facing Earth in the same direction. Based on the clean particle radiation environment of the moon, a neutral atomic telemetry base station could be established on the lunar surface facing Earth to realize long-term continuous geomagnetic activity monitoring. Using the 20°×20° field of view, the 0.5°×0.5° angle resolution, and the ~0.17 cm²sr geometric factor, a two-dimensional ENA imager is being designed. The magnetospheric ring current simulation at a 4–20 keV energy channel for a medium geomagnetic storm (Kp=5) shows the following: 1) at ~60 Rᴇ (Rᴇ is the Earth radius), the imager can collect 10⁴ ENA events for 3 min to meet the statistical requirements for 2D coded imaging data inversion, so as to meet requirements for the analysis of the substorm ring current evolution process of magnetic storms above medium; 2) the ENA radiation loss puzzles in the magnetopause and magnetotail plasma sheet regions have been deduced and revealed using the 2-D ENA emission model. High spatial-temporal resolution ENA imaging monitoring of these two important regions will provide the measurement basis for the solar wind energy input process and generation mechanism; 3) the average sampling interval of ENA particle events is about 16 ms at the moon’s orbit; the spectral time difference for the set energy range is on the order of minutes, which can provide location information to track the trigger of geomagnetic storm particle events.


Author(s):  
GIOVANNI DE ANGELIS ◽  
FRANCIS F. BADAVI ◽  
JOHN M. CLEM ◽  
STEVE R. BLATTNIG ◽  
MARTHA S. CLOWDSLEY ◽  
...  

2011 ◽  
Vol 68 (9-10) ◽  
pp. 1440-1447 ◽  
Author(s):  
A.N. Denisov ◽  
N.V. Kuznetsov ◽  
R.A. Nymmik ◽  
M.I. Panasyuk ◽  
N.M. Sobolevsky

2020 ◽  
Author(s):  
Christina Plainaki ◽  
Stefano Massetti ◽  
Xianzhe Jia ◽  
Alessandro Mura ◽  
Milillo Anna ◽  
...  

<p>The exosphere of Jupiter’s moon Ganymede is the interface region linking the moon’s icy surface to Jupiter’s magnetospheric environment. Space weather phenomena driven by the variability of the radiation environment within the Jupiter system can have a direct impact on the sputtering-induced exosphere of Ganymede.</p><p>In this work we simulate the Jovian ion precipitation to Ganymede’s surface for different moon orbital phases around Jupiter. In particular, we consider three different configurations between Ganymede’s magnetic field and Jupiter plasma sheet, similar to those encountered during the Galileo G2, G8, and G28 flyby (i.e., the moon above, inside, below the Jupiter plasma sheet). We discuss the differences between the various ion precipitation patterns and the implications in the density distribution of the sputtered-water exosphere of this moon. We also comment the possible relation of these ion precipitation patterns with the surface brightness asymmetries both between Ganymede’s polar cap and equatorial regions and between the leading and trailing hemispheres. The results of this preliminary analysis are relevant to the JUICE mission and in particular to the preparation of the future observation strategies for the environment of Ganymede.</p>


2010 ◽  
Vol 18 (2) ◽  
pp. 154-161 ◽  
Author(s):  
Yehuwdah E. Chad-Umoren ◽  
Margaret A. Briggs-Kamara

The distribution of ionizing radiation in Rivers State in the Niger Delta region of Nigeria is studied on the premise that the state ‐ wide distribution of oil and gas operations leads to a homogeneous ionizing radiation environment. The state is sub divided into three self‐ consistent sub environments of an upland college campus environment, a rural riverine environment and an industrial sub zone environment. Available data give a mean dose equivalent of 0.745+ 0.085 mSv/yr (upland campus environment), 0.690+0.170 mSv/yr (rural riverine communities) and 1.270+0.087 mSv/yr (industrial zone) indicating an inhomogeneous radiation profile. The differences may be due to variations in levels of industrial activities and local geological peculiarities. Health implications are also examined. Santrauka Jonizuojančiosios spinduliuotes pasiskirstymas Rivers valstijoje Nigerio deltos regione, Nigerijoje, yra nagrinejamas remiantis prielaida, kad valstijos mastu naftos ir duju veiklos pletra gali tureti itakos aplinkos jonizuojančiosios spinduliuotes homogenizacijai. Tirti pasirinktos trys būdingos aplinkos vietos: universiteto teritorija, esanti vasltijos aukštumoje, kaimo paupio teritorijos bei pramonine aplinka. Gauti rezultatai parode, kad vidutines dozes ekvivalentai atitinkamai pasirinktose vietose yra 0,745±0,085 mSv/yr, 0,690±0,170 mSv/yr ir l,270±0087 mSv/yr. Rezultatai paneige prielaida apie galima aplinkos jonizuojančiosios spinduliuotes homogenizacija. Šiems skirtumams itakos gali tureti nevienodi pramonines veiklos mastai bei vietiniai geologiniai ypatumai. Taip pat darbe skiriama demesio jonizacijos reikšmingumui sveikatai. Резюме Распределение ионизирующего излучения в штате Риверс региона дельты Нила в Нигерии анализируется на основании предпосылки о том, что расширение деятельности по добыче нефти и газа в масштабе штата может оказать влияние на гомогенизацию ионизирующего излучения в окружающей среде. Для исследований были подобраны три наиболее характерных места окружающей среды: территория университета, находящаяся на высоком месте штата, сельские территории вблизи реки и промышленная среда. Полученные результаты показали следующие эквиваленты средних доз в выбранных местах: 0,745±0,085 mSv/yr, 0,690±0,170 mSv/yr и 1,270± 0,087 mSv/yr и опровергли предпосылку о возможной гомогенизации ионизирующего излучения в окружающей среде. Разница в результатах может быть объяснена разными масштабами промышленной деятельности и местными геологическими особенностями. Также обращено внимание на значение ионизации для здоровья людей.


2001 ◽  
Vol 61 (3-6) ◽  
pp. 655-657 ◽  
Author(s):  
G. De Angelis ◽  
M. Caldora ◽  
M. Santaquilani ◽  
R. Scipione ◽  
A. Verdecchia

Sign in / Sign up

Export Citation Format

Share Document