hatom example with electric finite field #1442

Job	Run time
macos-latest: clang++ Release Threads	31m 45s
macos-latest: clang++ Release OneTBB	4m 1s
macos-latest: clang++ Release PaRSEC	3m 17s
ubuntu-20.04: /usr/bin/g++-9 Release Threads	46m 44s
ubuntu-20.04: /usr/bin/g++-9 Release OneTBB	3m 0s
ubuntu-20.04: /usr/bin/g++-9 Release PaRSEC	2m 48s
macos-latest: clang++ Debug Threads	31m 55s
macos-latest: clang++ Debug OneTBB	3m 59s
macos-latest: clang++ Debug PaRSEC	4m 45s
ubuntu-20.04: /usr/bin/g++-9 Debug Threads	47m 33s
ubuntu-20.04: /usr/bin/g++-9 Debug OneTBB	3m 0s
ubuntu-20.04: /usr/bin/g++-9 Debug PaRSEC	3m 5s
	3h 5m 52s

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