Distribution characteristics of hydrogen elements on lunar surface based on CE2-GRS data

Yonghui LI; Jiankun ZHAO; Shuang JIANG; Feiliang WANG; Hexi WU; Yibao LIU

doi:10.11889/j.0253-3219.2023.hjs.46.120201

NUCLEAR TECHNIQUES, Volume. 46, Issue 12, 120201(2023)

Distribution characteristics of hydrogen elements on lunar surface based on CE2-GRS data

Yonghui LI^1,2, Jiankun ZHAO^1,2、*, Shuang JIANG^1,2, Feiliang WANG^1,2, Hexi WU^1,2, and Yibao LIU^1,2

¹Jiangxi Research Center of Nuclear Geo-Data Science and System Engineering Technology, East China University of Technology, Nanchang 330013, China

²College of Nuclear Science and Engineering, East China University of Technology, Nanchang 330013, China

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Figures & Tables(12)

Fig. 1. Mechanism for producing hydrogen characteristic γ-rays on lunar surface

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Fig. 2. Qualitative analysis results of 0~3 MeV energy window (at 0° latitude and 30° west longitude of the lunar surface)

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Fig. 3. Spectral information of 2.1~2.5 MeV energy window after pretreatment (at 0° latitude and 30° west longitude of the lunar surface)

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Fig. 4. Quantitative analysis results of 2.1~2.5 MeV energy window (at 0° latitude and 30° west longitude of the lunar surface)

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Fig. 5. Distribution of epithermal neutron flux from LP

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Fig. 6. Fitting results of counts of Al characteristic peaks to abundance of Al₂O₃

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Fig. 7. Distribution of Al counts per 3 s on lunar surface

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Fig. 8. Distribution of H counts per 3 s on lunar surface

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Table 1. Branching ratios for characteristic γ rays of ²¹⁴Bi
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Table 1. Branching ratios for characteristic γ rays of ²¹⁴Bi
来源 Sourse
特征γ射线能量
Energy / MeV
分支比
Branch ratio / %
²¹⁴Bi 0.609 45.49
2.204 4.924

Table 2. Parameters in Eq.(8)
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Table 2. Parameters in Eq.(8)
参数 Parameter 值 Value
m 3
n 1
$R_{1}^{'}$ 4.924
$R_{1}$ 45.49
$P_{1}$ 105
$E_{p e a k}$ 2 204

Table 3. Abundance of Al₂O₃ and counts of ²⁷Al@2.210 MeV in the typical low H position on the lunar surface

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Table 3. Abundance of Al₂O₃ and counts of ²⁷Al@2.210 MeV in the typical low H position on the lunar surface

经度 Longitude	纬度 Latitude	计数 Counts / 3 s	丰度 Abundance / wt%
-120°	30°	9.2	32.2
-60°	30°	7.9	31.9
120°	30°	11.0	35.2
-120°	0°	13.0	37.7
60°	0°	12.5	37.1
-60°	-30°	10.7	36.1
120°	-30°	12.7	36.5
-120°	-30°	11.5	36.5
0°	20°	11.1	34.6
180°	20°	4.3	28.2
-120°	-20°	9.2	34.0
0°	-20°	12.5	36.8
60°	-20°	11.5	36.8
120°	-20°	9.8	36.7
180°	-20°	12.4	36.5

Table 4. Counts of hydrogen in 14 major maria

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Table 4. Counts of hydrogen in 14 major maria

位置 Location	序号 Number	月海名称 Name	坐标 Coordinate	计数 Counts / 3 s
月球正面 Nearside	1	知海 Mare Cognitum	-10.0°, -23.1°	4.9
	2	危海 Mare Crisium	17.0°, 59.1°	4.3
	3	冷海 Mare Frigoris	56.0°, 1.4°	0.01
	4	湿海 Mare Humorum	-24.4°, -38.6°	5.7
	5	雨海 Mare Imbrium	32.8°, -15.6°	10.9
	6	酒海 Mare Nectaris	-15.2°, 35.5°	0. 2
	7	云海 Mare Nubium	-21.3°, -16.6°	0.3
	8	东方海 Mare Orientale	-19.4°, -92.8°	3.4
	9	澄海 Mare Serentitatis	28.0°, 17.5°	1.3
	10	风暴洋Oceanus Procellarum	18.4°, -57.4°	12.8
月球背面 Farside	11	智海 Mare Ingenii	-33.7°, 163.5°	13.7
	12	洪保德海Humboldtianum	56.8°, 81.5°	0.1
	13	莫斯科海 Mare Moscoviense	27.3°, 147.9°	0.01
交界处 Junction	14	史密斯海 Mare Smythii	1.3°, 87.5°	4.2

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Yonghui LI, Jiankun ZHAO, Shuang JIANG, Feiliang WANG, Hexi WU, Yibao LIU. Distribution characteristics of hydrogen elements on lunar surface based on CE2-GRS data[J]. NUCLEAR TECHNIQUES, 2023, 46(12): 120201

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